Lavabrink Floodgates
Artifact
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At the beginning of each player's upkeep, that player may put a doom counter on this artifact or remove a doom counter from it. Then if it has three or more doom counters on it, sacrifice this artifact. When you do, it deals 6 damage to each creature.
At the beginning of each player's upkeep, that player may put a doom counter on this artifact or remove a doom counter from it. Then if it has three or more doom counters on it, sacrifice this artifact. When you do, it deals 6 damage to each creature.
フォーマット
スタンダード : 不可パイオニア : 不可モダン : 不可レガシー : 可能ヴィンテージ : 可能パウパー : 不可統率者戦 : 可能デジタル専用フォーマット
アルケミー : 不可エクスプローラー : 不可ヒストリック : 不可タイムレス : 不可同名カード
統率者（2020年版）#53日本語
カード裁定
2020/04/17
原文The player whose upkeep it is may put a doom counter on Lavabrink Floodgates, remove one from it, or do nothing.
2020/04/17
原文Lavabrink Floodgates is sacrificed for having three or more doom counters on it only while its ability is resolving. If you put a third counter on it some other way, it won't be immediately sacrificed.
2020/04/17
原文Lavabrink Floodgates's reflexive triggered ability triggers and deals damage only if you sacrifice it while resolving its triggered ability. It won't trigger if you sacrifice it for any other reason.
data from gatherer