法术
获得目标生物的操控权直到回合结束。重置该生物。它获得敏捷异能直到回合结束。派出一个血滴衍生物。(血滴衍生物是具有「

,

,弃一张牌,牺牲此神器:抓一张牌」的神器。)
You can't sacrifice a Blood token to pay multiple costs.
Some triggered abilities trigger "whenever you sacrifice a Blood token." These abilities trigger regardless of why you sacrificed that Blood token.
Some spells that instruct you to create a Blood token require targets. You can't cast these spells without choosing all required targets, and if all of those targets become illegal targets, the spell won't resolve and you won't create any Blood tokens. If some but not all of those targets become illegal, you'll do as much as possible, including creating Blood tokens.
If an effect refers to a Blood token, it means any artifact token with the subtype Blood, even if it has gained other subtypes.