クリーチャー — 猫
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牙長獣の仔がプレイヤー1人に戦闘ダメージを与えるたび、あなたは


(エネルギー・カウンター2個)を得る。


を支払う:牙長獣の仔の上に+1/+1カウンターを1個置く。
Some triggered abilities that state that you "may pay" a certain amount of
describe an effect that happens "If you do." In that case, no player may take actions to try to stop the ability's effect after you make your choice. If the payment is followed by the phrase "When you do," then you'll choose any targets for that reflexive triggered ability and put it on the stack before players can take actions.