白たてがみのライオン

瞬速 （あなたはこの呪文を、あなたがインスタントを唱えられるときならいつでも唱えてよい。）
白たてがみのライオンが戦場に出たとき、あなたがコントロールするクリーチャーを１体、オーナーの手札に戻す。

Whitemane Lion

Flash
When this creature enters, return a creature you control to its owner's hand.

The List

Dominaria Remastered

Flash
When Whitemane Lion enters the battlefield, return a creature you control to its owner's hand.

Time Spiral Remastered

Whitemane Lion's ability doesn't target any creature, therefore no player may take actions between the time you choose the creature to return and the time you return it.

You may return Whitemane Lion itself to its owner's hand as its triggered ability resolves. If you don't control any other creature, you must return it.