平面の敵

ターン終了時まで、対戦相手がコントロールしているすべてのクリーチャーは基本のパワーとタフネスが０/１になる。

Flatline

Creatures your opponents control have base power and toughness 0/1 until end of turn.

Doctor Who

"We've found the missing people—they're in the walls!"
—The Twelfth Doctor

Flatline affects only creatures your opponents control at the time it resolves. Creatures they begin to control later in the turn won't change power and toughness.

Flatline overwrites any effects that set a creature's power and toughness. Any existing effects or counters that raise, lower, or switch a creature's power and/or toughness continue to apply to the creature's newly-set power and toughness.