Identity core
Must be unique —
create_token and put_battlefield look cards up by this exact name.Type & Class core
Blueprint cards start on the workbench (max 10/deck) and are the only cards that may use Assemble. Legendary applies the legend rule.
Token marks a card that only exists once an effect makes it: it never appears in the deck builder, cannot be put in a deck, and ceases to exist the moment it leaves the battlefield instead of going to the junkyard. Give every token a name —
create_token finds it by name, so a nameless token can never be created.Comma-separated.
Part is meaningful: Parts attach to mechs and grant their stats/abilities.Mech Power / Durability. Click −100 / +100 or type a number; stats move in steps of 100. Damage builds up until it reaches durability, then the mech breaks.
Cost core
0
Coloured pips are strict requirements. Gen is generic energy payable with any colour.
YY2 = 2 Nuclear + 2 generic.
X is chosen by the player as the card is played and paid as generic: XG = 1 Chemical + X. Use this card: the X it was played for to read it back in an ability.Energy Info energy
Part Grants gear
What this card gives its host mech while attached as a Part — and what it contributes as Build material.
A mech Built from Parts is colorless unless a Part grants a type here.
The energy a Part was played with never carries over — only this field does.
The host gets these while this Part is attached, and loses
them when it comes off. "Grants the mech: once per turn, remove 100 damage from it."
A fallback only — the builder above covers the same schema.
Rules Text & Keywords core
Display only — the engine never reads this. The Abilities section is what actually runs.
Known (JSON id first, in-game name after):
first_strike Initiative · deathtouch Overpower · lifelink Medic · breach · defender · hexproof Stealth · flash Instant deploy · must_attack · uncounterable · play_from_junkyard Salvageable · protection:<colour letter or type>Abilities the engine
Modes (Modal Cards) optional
Assemble (Blueprint) blueprint
Additional Costs optional
Extra costs paid as the card is played, on top of energy. The engine supports exactly these seven —
any other action makes the card permanently unplayable.
Card Art preview
Preview only — never written to JSON. In the game, art is a PNG named after the card (see Advanced).
Advanced optional
In-game art is name-keyed:
Border-by-identity is not implemented yet; every option uses the default template.
Merged into the card last. Use for any field this GUI does not expose.
Load Existing Card JSON tools
JSON Output
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