沈黙の大嵐、シュー・ユン

Text:

果敢（あなたがクリーチャーでない呪文を１つ唱えるたび、ターン終了時まで、このクリーチャーは＋１/＋１の修整を受ける。）
あなたがクリーチャーでない呪文を１つ唱えるたび、クリーチャー１体を対象とする。あなたはを支払ってもよい。そうしたなら、ターン終了時までそれは二段攻撃を得る。

Rulings:

• 11/24/2014 Any spell you cast that doesn’t have the type creature will cause prowess to trigger. If a spell has multiple types, and one of those types is creature (such as an artifact creature), casting it won’t cause prowess to trigger. Playing a land also won’t cause prowess to trigger.
• 11/24/2014 Prowess triggers only once for any spell, even if that spell has multiple types.
• 11/24/2014 Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell.
• 11/24/2014 Once it triggers, prowess isn’t connected to the spell that caused it to trigger. If that spell is countered, prowess will still resolve.