To import this deck into the Dvorak MUSH Engine, just cut and paste the quoted commands below straight into your telnet window. (Any card whose type is neither "Thing" nor "Action" will default to "Thing"; if it was somehow meant to be played like an Action, just destroy it after playing it.)
cleardeck loadcard hb/Aqua Queen (1)/Essence/Water-Ruler's Might: If you have a "Fishrink" or "Sonic Fish" on the field when you play this card, you may search your deck for two cards, show them to your opponent, and place them into your hand. Shuffle the deck afterward.-HP 21-Strength 17-Shield 28-Speed 19 loadcard hb/Beast of Wind (1)/Essence/Wind-Tornado: Every three turns, the card your opponent would have drawn at the beginning of their turn is discarded instead and they do not draw.-HP 39-Strength 40-Shield 17-Speed 25 loadcard hb/Beetle (0)/Essence/Earth/Wind- A bug with a large horn for attacking and a hard shell for defending.-HP 13-Strength 15-Shield 18-Speed 16 loadcard hb/Blaze Sword (1)/Essence/Fire- Thought to be held by a ghost knight, it swings violently in the night.-HP 20-Strength 30-Shield 11-Speed 19 loadcard hb/Boulder Bird (0)/Essence/Earth/Wind- A heavy and hard bird that has trouble flying.-HP 18- Strength 12- Shield 18- Speed 15 loadcard hb/Boulder Prince (0)/Essence/Earth- Ruler's Might: If you have a "Boulder Bird" or "Snail" on the field when you play this card, draw 2 cards.-HP 21-Strength 18- Shield 17-Speed 3 loadcard hb/Breeze Apprentice (1)/Essence/Wind- Strong Winds: Flip a coin. If heads, switch your opponent's active Essence with another. If tails, switch your active Essence with another.-HP 20-Strength 15- Shield 35- Speed 26 loadcard hb/Breeze Princess (0)/Essence/Wind- Ruler's Might: If you have a "Harpy" or "Sonic Fish" on the field when you play this card, you may search your deck for a card, show it to your opponent, and place it into your hand. Shuffle the deck afterward.-HP 13- Strength 7-Shield 19- Speed 17 loadcard hb/Bright Wall (0)/Essence/Light- Block: In order for this Essence to take any damage, the Strength of the opposing Essence must be higher than 30.-HP 30- Strength 0-Shield 30-Speed 0 loadcard hb/Crab Demon (0)/Essence/Water/Dark- An evil crab with an armored shell. It lives only in polluted waters.-HP 15-Strength 10- Shield 12- Speed 6 loadcard hb/Dark Dragon (1)/Essence/Dark- Sweep of the Black: You may discard all Light Essences on your opponent's side of the field by discarding a Dark Essence on your side of the field.-HP 29- Strength 40- Shield 10-Speed 39 loadcard hb/Demonic Blaster (2)/Essence/Dark/Fire- Ammo Blaster: You may offer one "Mini Demon" or "Evil Fire" from your side of the field to raise each of this card's stats by the amount of the offered card's stats.-HP 42-Strength 30-Shield 21- Speed 53 loadcard hb/Dim Wall (0)/Essence/Dark- Block: In order for this Essence to take any damage, the Strength of the opposing Essence must be higher than 30.-HP 30- Strength 0-Shield 30- Speed 0 loadcard hb/Doom Finder (0)/Essence/Dark- Evil Eye: When you summon this card, you may search your deck for one "Vile Cave" and place it into your hand. Shuffle the deck afterward.-HP 8-Strength 13-Shield 24- Speed 7 loadcard hb/Dragon Master (6)/Essence/Dark/ Light/ Earth/ Wind/ Fire/ Water- Master: This card may only be summoned by overlapping a "Dark Dragon", "Light Dragon", "Water Dragon", "Fire Dragon", "Earth Dragon", and "Wind Dragon". All effects other than this one do not effect "Dragon Master". In five turns, destroy this Essence.-HP 150-Strength 150-Shield 150- Speed 150 loadcard hb/Earth Dragon (1)/Essence/Earth- Miracle of the Yellow: You may discard all Wind Essences on your opponent's side of the field by discarding an Earth Essence on your side of the field.-HP 42-Strength 33- Shield 21-Speed 17 loadcard hb/Evil Fire (0)/Essence/Fire/Dark- A pitch black flame of despair.-HP 21- Strength 19- Shield 9-Speed 20 loadcard hb/Falcon (0)/Essence/Wind- Air Search: You may search your deck for any pureWind Essence, show it to your opponent, and place it into your hand. Shuffle the deck afterward.-HP 9- Strength 18-Shield 15-Speed 21 loadcard hb/Fallen Angel (1)/Essence/Dark/Light- Vengeance: When this card is sent to the discard pile, destroy the top 2 cards of your opponent's deck.-HP 19-Strength 21-Shield 14-Speed 27 loadcard hb/Fire Dragon (1)/Essence/Fire- Power of the Red: You may discard all Water Essences on your opponent's side of the field by discarding a Fire Essence on your side of the field.-HP 53- Strength 42- Shield 17- Speed 21 loadcard hb/Firefly (0)/Essence/Fire/Wind- A bug that shines brightly each night.-HP 13-Strength 8-Shield 17-Speed 13 loadcard hb/Fishrink (0)/Essence/Water- A fish with the odd ability to shrink.-HP 10-Strength 12- Shield 15- Speed 16 loadcard hb/Flare Fist (0)/Essence/Fire- It attacks everything it sees.-HP 18-Strength 20-Shield 7-Speed 11 loadcard hb/Floating Flame (0)/Essence/Fire/Wind- In the Essence world, if this Essence burns dimly above your head, it signals the approach of death.-HP 13-Strength 19-Shield 19-Speed 4 loadcard hb/Floating Wall (0)/Essence/Wind- Block: In order for this Essence to take any damage, the Strength of the opposing Essence must be higher than 30.-HP 30-Strength 0-Shield 30-Speed 0 loadcard hb/Flying Ghost (0)/Essence/Wind/Dark- A floating phantom of evil.-HP 4-Strength 7-Shield 23- Speed 17 loadcard hb/Fortress Wall (1)/Essence/Earth- Omega Block: You must overlap a card with "wall" in its name in order to play this card. No other Essence on your side of the field may be attacked while this card is in play.-HP 80-Strength 0-Shield 80-Speed 0 loadcard hb/Gargoyle of Stone (2)/Essence/Earth- Crumble: When this Essence is sent to the discard pile, search your deck for a "Rockman", "Pebble", or "Rock Area" and place it on your side of the field. Shuffle your deck afterward.-HP 15-Strength 50-Shield 40- Speed 2 loadcard hb/Giant Snowman of the Desert (2)/Essence/Water- Meltdown 3: If you overlap a "Snowman of the Desert" to play this card, it is all you have to overlap. This effect activates every time your opponent attacks. This Essence dodges the attack and negates it. If you overlapped a "Snowman of the Desert" to play this card, every time this effect activates, gain +10 to all stats.-HP 15-Strength 15-Shield 15- Speed 15 loadcard hb/Giant Whale (1)/Essence/Water- Blowhole: Offer Essences with "fish" in their name from your side of the field in order to make your opponent destroy the same number of Essences that you offered for this effect.-HP 32-Strength 29-Shield 29-Speed 8 loadcard hb/Glorious Resurrectioner (1)/Essence/Light- Revival: Once per turn, you may return one card of your choice from your discard pile and add it to your hand.-HP 15-Strength 20-Shield 25-Speed 25 loadcard hb/Harpy (0)/Essence/Wind- An odd flying creature. Details are unknown.-HP 9-Strength 18-Shield 14- Speed 20 loadcard hb/Highly Reactive Bomber (0)/Essence/Fire/Earth- Reaction to an Explosion: When you summon this Essence, search your deck for one Reaction card, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 5-Strength 23-Shield 5-Speed 14 loadcard hb/Holy Adviser (0)/Essence/Light- Knowledge: Your opponent must show you their hand.-HP 14- Strength 11-Shield 19-Speed 19 loadcard hb/Ice Wall (0)/Essence/Water- Block: In order for this Essence to take any damage, the Strength of the opposing Essence must be more than 30.-HP 30-Strength 0-Shield 30-Speed 0 loadcard hb/Law Keeper (0)/Essence/Light/Dark- A two-sided judge of justice and destruction.-HP 20-Strength 10-Shield 5- Speed 7 loadcard hb/Ligarth Radian (0)/Essence/Light- Once a powerful Light spirit, his potential has yet to be released.-HP 19-Strength 12-Shield 19-Speed 10 loadcard hb/Light Bringer (0)/Essence/Light- Holy Eye: When you summon this card, you may search your deck for one “Cloud Arena” and place it in your hand. Shuffle the deck afterward.-HP 15-Strength 13-Shield 19-Speed 18 loadcard hb/Light Dragon (1)/Essence/Light- Gift of the White: You may discard all Dark Essences on your opponent’s side of the field by discarding a Light Essence on your side of the field.-HP 40-Strength 10-Shield 39-Speed 29 loadcard hb/Little Snowman of the Desert (0)/Essence/Water- Meltdown: This effect activates when your opponent attacks. This Essence dodges the attack and negates it.-HP 1-Strength 1-Shield 1-Speed 1 loadcard hb/Lord Angel (2)/Essence/Light- Almighty Angel: When this card comes into play, all non-Angel effects are negated.-HP 39-Strength 32-Shield 41-Speed 57 loadcard hb/Lord Demon (2)/Essence/Dark- Command Demon: When this card comes into play, all non-Demon effects are negated.-HP 41-Strength 57-Shield 32-Speed 39 loadcard hb/Magmus (0)/Essence/Fire/Earth- Magma Flow: All Fire essences gain +5 Speed while this card is on the field.-HP 19-Strength 12- Shield 18-Speed 11 loadcard hb/Mega Angel (2)/Essence/Light/Wind- Heaven’s Ray: Discard a “Cloud Arena” or a “Mini Fire Angel” from your hand to destroy all cards in your opponent’s hand.-HP 55-Strength 30-Shield 20-Speed 36 loadcard hb/Mermaid (0)/Essence/Water- Aqua Search: You may search your deck for any pure Water Essence, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 10-Strength 7-Shield 20-Speed 19 loadcard hb/Miniature Dragon (0)/Essence/?- Elemental Shift: This card’s element is declared by its owner when summoned.-HP 16-Strength 16-Shield 16- Speed 16 loadcard hb/Mini Demon (0)/Essence/Dark- A servant to Lord Demon whose Speed is well known among smaller Essences.-HP 12-Strength 7-Shield 10-Speed 18 loadcard hb/Mini Fire Angel (0)/Essence/Light/Fire- A small, flaming angel sent to seek out the wicked.-HP 12-Strength 18-Shield 5-Speed 15 loadcard hb/Mole Digger (0)/Essence/Dark/Earth- This little creature has been the cause of many earthquakes.-HP 18-Strength 13-Shield 19-Speed 15 loadcard hb/Molten Beast (1)/Essence/Fire- Melting: Each turn, this Essence loses 10 in each of its stats.-HP 100-Strength 100-Shield 100-Speed 100 loadcard hb/Phoenix (1)/Essence/Fire- Reborn from Ashes: Once this Essence has been sent to the discard pile, search your deck or discard pile for one “Phoenix” and place it in your hand. Shuffle your deck if it came from your deck.-HP 25-Strength 19-Shield 15-Speed 30 loadcard hb/Pretty Princess (0)/Essence/Light- A beautiful young soon-to-be ruler of Light.-HP 11-Strength 8-Shield 3-Speed 18 loadcard hb/Priest of Evil (0)/Essence/Dark- Vile Search: You may search your deck for any pure Dark Essence, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 15- Strength 11-Shield 19-Speed 15 loadcard hb/Priest of Light (0)/Essence/Light- Bright Search: You may search your deck for any pure Light Essence, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 11-Strength 15-Shield 20-Speed 16 loadcard hb/Pyrobber (1)/Essence/Fire- Steal: When this Essence destroys an opponent’s Essence, randomly select a card from your opponent’s hand and place it in yours. After you use it, place it in your opponent’s discard pile. Return it after the match if you do not use it.-HP 29-Strength 15-Shield-19-Speed 35 loadcard hb/Pyro King (1)/Essence/Fire- Ruler’s Might: If you have a “Volcano Bird” or a “Flare Fist” on the field when you summon this card, draw 4 cards.-HP 17-Strength 29-Shield 20-Speed 16 loadcard hb/Pyro Wall (0)/Essence/Fire- Block: In order for this Essence to take any damage, the Strength of the opposing Essence must be more than 30.-HP 30-Strength 0-Shield 30-Speed 0 loadcard hb/Rescue Dolphin (0)/Essence/Water- This animal is thought to be a guardian angel in disguise.-HP 14-Strength 14-Shield 20-Speed 20 loadcard hb/Rock Catapulter (0)/Essence/Earth- Rocky Eye: When you summon this card, you may search your deck for one “Rock Area” and place it in your hand. Shuffle the deck afterward.-HP 25-Strength 25-Shield 1-Speed 1 loadcard hb/Rock Collector (0)/Essence/Earth- Ground Search: You may search your deck for any pure Earth Essence, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 10-Strength 7-Shield 20-Speed 19 loadcard hb/Rockman (0)/Essence/Earth- Created by the crumbling statues from long ago, it is vengeful and seeks those who crushed it.-HP 17-Strength 20-Shield 15- Speed 1 loadcard hb/Rock Wall (0)/Essence/Earth- Block: In order for this Essence to take any damage, the Strength of the opposing Essence must be more than 30.-HP 30-Strength 0-Shield 30-Speed 0 loadcard hb/Salamander (0)/Essence/Fire- Lava Search: You may search your deck for any pure Fire Essence, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 8-Strength 12-Shield 17-Speed 19 loadcard hb/Saved Spirit (1)/Essence/Light- Unlocked Potential: If you overlapped a Ligarth Radian for this card, you may make a critical hit move with this card as your attack..-HP 22-Strength 29-Shield 15-Speed 15 loadcard hb/Seeker Fish (0)/Essence/Water- Aqua Eye: When you summon this card, you may search your deck for one “Flooded Plains” and place it in your hand. Shuffle the deck afterward.-HP 17-Strength 15-Shield 11-Speed 17 loadcard hb/Servant of the Skies (2)/Essence/Light/Wind- Second in Command: If an Essence comes into play with a Speed higher than this card, destroy this card (unless the summoned card is a Lord Angel). If your opponent cannot defeat this Essence within 5 turns of this card being in the active position, destroy the top 20 cards of their deck.-HP 31-Strength 29-Shield 30-Speed 50 loadcard hb/Shark (1)/Essence/Dark/Water- A vicious meat-eater that slashes through its enemies at high speeds.-HP 25-Strength 20-Shield 10-Speed 15 loadcard hb/Sky Seeker (0)/Essence/Wind- Sky Eye: When you summon this card, you may search your deck for a “Mountaintop” and place it in your hand. Shuffle the deck afterward.-HP 21-Strength 6-Shield 7-Speed 25 loadcard hb/Snail (0)/Essence/Water/Earth- Sticky Gunk- When this Essence is in the active position, all its opponent’s Speeds are reduced to zero.-HP 5-Strength 5-Shield 20-Speed 1 loadcard hb/Snowman of the Desert (1)/Essence/Water- Meltdown 2: This effect activates when your opponent attacks. This Essence dodges the attack and negates it. If you overlapped a “Little Snowman of the Desert” to play this card, every time this effect activates gain +5 to all stats.-HP 5-Strength 5-Shield 5- Speed 5 loadcard hb/Sonic Fish (0)/Essence/Water/Wind- Speed Draw: When you play this card, draw two cards from the top of your deck.-HP 10-Strength 10-Shield 19-Speed 21 loadcard hb/Steam Phantom (3)/Essence/Water/Fire/Dark- Ghost Pass: This card may attack any Essence on your opponent’s side of the field.-HP 15-Strength 31-Shield 42-Speed 21 loadcard hb/Swordsman of Destiny (1)/Essence/Earth- Destiny Battle: If this Essence is in the active position, whoever loses their active Essence first loses the match.-HP 19-Strength 35-Shield 31-Speed 18 loadcard hb/Tide Shifter (0)/Essence/Water- Changing Tides: When you summon this Essence, search your deck for one Change card, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 12- Strength 18-Shield 11-Speed 19 loadcard hb/Truth-Seeking Warrior (0)/Essence/Earth/Light- Taking Action: When you summon this Essence, search your deck for one Action card, show it to your opponent, and place it in your hand. Shuffle the deck afterward.-HP 14-Strength 19-Shield 19-Speed 8 loadcard hb/Vile Jester (0)/Essence/Dark- Trickery: While there is a card with “King”, “Queen”, “Prince”, or “Princess” in its name on the field, this card can attack any of your opponent’s Essences.-HP 19-Strength 20-Shield 13-Speed 12 loadcard hb/Volcano Bird (0)/Essence/Fire/Wind- Bird’s Eye: When you summon this card, you may search your deck for a “Volcano” and place it in your hand. Shuffle the deck afterward.-HP 17-Strength 9-Shield 10-Speed 17 loadcard hb/Water Dragon (1)/Essence/Water- Aid of the Blue: You may discard all Fire Essences on your opponent’s side of the field by discarding a Water Essence on your side of the field.-HP 21-Strength 17-Shield 42- Speed 33 loadcard hb/Water Warrior (0)/Essence/Water/Earth- A strong warrior born from the waves.-HP 19-Strength 18-Shield 7-Speed 9 loadcard hb/Weeping Queen (0)/Essence/Light- Sorrow: This Essence my attack on your opponent’s turn also.-HP 13-Strength 11-Shield 21-Speed 3 loadcard hb/Wind Bomber (1)/Essence/Wind- Bomb Drop: Offer two Wind Essences on your side of the field to make your opponent discard the top card of their deck.-HP 20-Strength 31-Shield 22-Speed 51 loadcard hb/Wind Dragon (1)/Essence/Wind- Blessing of the Green: You may discard all Earth Essences on your opponent’s side of the field by discarding a Wind Essence on your side of the field.-HP 17-Strength 21-Shield 33-Speed 42 loadcard hb/Wolfoul (0)/Essence/Earth/Dark- A dark wolf who is constantly seeking prey. It does not rest until it has killed something.-HP 12-Strength 21-Shield 11-Speed 15 loadcard hb/Za of the Yin and Yang (0)/Essence/Light/Dark- Yin-Yang: If there are two “Za of the Yin and Yang” on the field, double the stats of this card.-HP 14-Strength 15-Shield 19-Speed 20 loadcard hr/Abyss/Action/This may only be equipped to a Dark Essence. Increase its Strength and Shield stats by 3 each. loadcard hr/Blow Away/Action/Choose one of your opponent’s cards on the field. Place it on the bottom of your opponent’s deck. It may not be searched for and is placed back on the bottom of the deck after shuffling. loadcard hr/Breeze/Action/This may only be equipped to a Wind Essence. Increase its Strength and Speed stats by 3 each. loadcard hr/Burnout/Action/Destroy three of your opponent’s Essences. loadcard hr/Cloud Arena/Action/This card gives +2 to all stats of Light Essences in your and your opponent’s hands, field, and decks until this card’s effect is negated. loadcard hr/Destruction/Action/Destroy all cards on the field, including your own. loadcard hr/Doom Curse/Action/Equip this to one of your Essences. If it is sent to the discard pile, your opponent’s active Essence is sent to the discard pile as well. loadcard hr/Dragon Tower/Action/Once per turn, you may search your deck for a card with the word “Dragon” in its name, show it to your opponent, and place it in your hand. Shuffle the deck afterward. loadcard hr/Flooded Plains/Action/This card gives +2 to all stats of Water Essences in your and your opponent’s hands, field, and decks until this effect is negated. loadcard hr/Mountaintop/Action/This card gives +2 to all stats of Wind Essences in your and your opponent’s hands, field, and decks until this effect is negated. loadcard hr/Painful Sacrifice/Action/You may discard any number of cards in your hand to draw that many cards from the top of your deck. loadcard hr/Pebbles/Action/This may only be equipped to an Earth Essence. Increase its HP and Strength stats by 3 each. loadcard hr/Rays/Action/This may only be equipped to a Light Essence. Increase its Speed and HP stats by 3 each. loadcard hr/Ripple/Action/This may only be equipped to a Water Essence. Increase its Speed and Shield stats by 3 each. loadcard hr/Rock Area/Action/This card gives+2 to all stats of Earth Essences in your and your opponent’s hands, field, and decks until this effect is negated. loadcard hr/Seek/Action/Draw two cards from the top of your deck. Then discard one card from your hand. loadcard hr/Spark/Action/This may only be equipped to a Fire Essence. Increase its HP and Shield stats by 3 each. loadcard hr/Vile Cave/Action/This card gives +2 to all stats of Dark Essences in your and your opponent’s hands, field, and decks until this effect is negated. loadcard hr/Volcano/Action/This card gives +2 to all stats of Fire Essences in your and your opponent’s hands, field, and decks until this effect is negated. loadcard hb/Aiding Wind/Change/Switch your active Essence with another of your Essences. loadcard hb/Blocker/Change/For one turn, one of your opponent’s Essences cannot attack. Your opponent may choose another one of his or her Essences to attack with. loadcard hb/Boost/Change/For one turn, all of your Essences gain 2 extra Strength or Shield points. loadcard hb/Chains/Change/For one turn, all of your opponent’s Essences lose 2 Speed points. loadcard hb/Double Image/Change/Copy any Essence on the field, including stats and abilities. loadcard hb/Eruption/Change/Once this card is activated, change the element of every Essence to Fire. loadcard hb/Limiting Wind/Change/Switch your opponent’s active Essence with another. loadcard hb/Liquidate/Change/For one turn, all of your opponent’s Essences’ stats become 1. loadcard hb/Massive Growth/Change/Once this card is activated, change the element of every Essence to Earth. loadcard hb/Meltdown/Change/After activation, your active Essence counts as having been attacked once. loadcard hb/Moonlight/Change/Once this card is activated, change the element of every Essence to Dark. loadcard hb/Shieldbreak/Change/For one turn, all of your opponent’s Essences lose 2 Shield points. loadcard hb/Speed Up/Change/For one turn, all of your Essences gain three extra Speed points. loadcard hb/Sunlight/Change/Once this card is activated, change the element of all Essences to Light. loadcard hb/Tidal Wave/Change/Once this card is activated, change the element of all Essences to Water. loadcard hb/Tornado/Change/Once this card is activated, change the element of all Essences to Wind. loadcard hb/Weapon Smash/Change/For one turn, all of your opponent’s Essences lose 2 Strength points. loadcard hr/Bombing Site/Reaction/After a field is played, destroy the field and negate its effects. loadcard hr/Breakdown/Reaction/You may activate this card when your opponent draws a card. Destroy all other cards in their hand. loadcard hr/Chain Reaction/Reaction/Activate this when your opponent plays a card. Destroy that card. loadcard hr/Cursed Reversal/Reaction/When an opponent plays an Essence, switch the Strength and HP of that Essence with one of your own. This effect lasts until negated. loadcard hr/Destruction of Weapons/Reaction/When your opponent plays an equipment, destroy all equipped Action cards on the field. loadcard hr/Digression/Reaction/When your opponent overlaps for an Essence, destroy the overlapped Essence. The original Essence being overlapped remains on the field. loadcard hr/Double or Nothing/Reaction/When a player draws cards, they must flip a coin. If tails, they draw no cards. If heads, they draw double the original amount. loadcard hr/Double Up/Reaction/When you draw cards, draw twice as many for one turn. loadcard hr/Explosion/Reaction/When your opponent plays an Essence, choose one of its stats. Destroy all Essences on the field with a lower stat than the chosen stat. loadcard hr/Last Chance for Rescue/Reaction/Discard your hand. When your opponent makes a Critical Hit move with an overlapped Essence, they take a Critical Hit also. loadcard hr/No Actions/Reaction/After activation, your opponent cannot play Action cards for two turns. loadcard hr/Seize/Reaction/When your opponent searches their deck, destroy the top four cards of their deck before they search. loadcard hr/Sneak Attack/Reaction/When your opponent’s Essence attacks, draw three cards. loadcard hr/Thief/Reaction/When your opponent summons an Essence with an effect, negate all effects for one turn. loadcard hr/Time Stop/Reaction/After activation, your opponent’s turn ends immediately. @emit [name(%#)] pastes the Spirit Battle CCG into the Dvorak Engine.