生物~植物/元素
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每當你犧牲另一個永久物時,在血荊靈上放置一個+1/+1指示物。
Bloodbriar's ability is a triggered ability, not an activated ability. It doesn't allow you to sacrifice a permanent whenever you want; rather, you need some other way of sacrificing permanents.
If you sacrifice a permanent as part of casting a spell or activating an ability, Bloodbriar's ability will resolve before that spell or ability.
A legendary permanent that is put into a graveyard because of the “legend rule” isn't sacrificed.