巫術
你抽兩張牌,失去兩點生命,然後派出一個血滴衍生物。(血滴衍生物是具有「

,

,棄一張牌,犧牲此神器:抽一張牌」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.
If an effect refers to a Blood token, it means any artifact token with the subtype Blood, even if it has gained other subtypes.