Forge Simulation Builder

Game settings

Turn Active player Phase Turn limit Timeout (s) Stop at phase

passive AI (only scripted actions) return final state game log remove summoning sickness apply only (don't play)

Players

Life Counters (e.g. ENERGY=2, POISON=1) Respond script (e.g. Counterspell->3) Mana pool — floating mana at start (e.g. W U B)

Add cards — search Scryfall or type a name and press Enter

adds to the zone selected below

Actions — cast spells, activate abilities

Actions the seat takes when play begins, in row order. Index picks which spell or ability on the card when it has several; colour, the mana an any-colour source makes. Target = card id, unambiguous card name, or a player as p0, p1…

Stack — spells already on the stack

The game opens with these on the stack; the authored state should already reflect their costs. Resolved top-down: the last entry is on top and resolves first. Per-player respond scripts fire while it resolves.

Result

Set up a scenario on the left, then ▶ Run report.

Request JSON

the exact /simulate body — view, edit, copy

⚔ Forge Simulation Builder

Game settings

Players

Add cards — search Scryfall or type a name and press Enter

Actions — cast spells, activate abilities

Stack — spells already on the stack

Result

Request JSON

Card