インスタント
あなたの対戦相手がコントロールするクリーチャーは、ターン終了時まで-4/-0の修整を受ける。
Hysterical Blindness's effect will continue to apply to a creature even if you (or a teammate) gains control of that creature later in the turn.
Only creatures controlled by your opponent when Hysterical Blindness resolves will get -4/-0. Creatures that enter or that an opponent gains control of later in the turn will be unaffected.