用心深いナーガ
クリーチャー — ナーガ・ウィザード
用心深いナーガが攻撃するに際し、あなたはこれを督励してもよい。そうしたとき、カードを１枚引く。（督励されたクリーチャーは、あなたの次のアンタップ・ステップにアンタップしない。）
ナーガの二股の舌は風が運ぶ臭いを敏感に嗅ぎ分ける。過去や現在や、ときには未来の臭いまでも。
Illustrated by
Amonkhet#193UncommonJapaneseLegality
Rulings
If you gain control of another player’s creature until end of turn and exert it, it will untap during that player’s untap step.
You can’t exert a creature unless an effect allows you to do so. Similar effects that “tap and freeze” a creature (such as that of Decision Paralysis) don’t exert that creature.
If an exerted creature is already untapped during your next untap step (most likely because it had vigilance or an effect untapped it), exert’s effect preventing it from untapping expires without having done anything.
All cards in the Amonkhet set that let you exert a creature let you do so as you declare it as an attacking creature, as do some of the cards in the Hour of Devastation set. You can’t do so later in combat, and creatures put onto the battlefield attacking can’t be exerted. Any abilities that trigger on exerting an attacking creature will resolve before blockers are declared.