この呪文を唱えるための追加コストとして、伝説のクリーチャー1体を生け贄に捧げるか

を支払う。
起動型能力、誘発型能力、またはクリーチャーでない呪文である1つを対象とする。それを打ち消す。
Triggered abilities use the word "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]." Some keywords (such as prowess) are triggered abilities and will use "when," "whenever," or "at" in their reminder text.
Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities (such as equip) are activated abilities and will have a colon in their reminder text.