Imbued in the Ancient Fang were spells far darker than any Dack Fayden would cast.

Feast of Blood

Cast this spell only if you control two or more Vampires.
Destroy target creature. You gain 4 life.

"The best part of a wedding is the cutting of the cake, followed closely by the cutting of the cake decorator."
—Olivia Voldaren

Jumpstart 2022

IDW Comics Inserts

"The vampires of this world don't know the pleasures of hunger. They gorge themselves without savoring the kill."
—Sorin Markov

Zendikar

Cast Feast of Blood only if you control two or more Vampires.
Destroy target creature. You gain 4 life.

If the targeted creature is an illegal target by the time Feast of Blood resolves, the entire spell doesn’t resolve. You don’t gain life.

Whether you control two or more Vampires is checked only as you try to move Feast of Blood to the stack as the first step of casting it. It doesn’t matter whether you still control two or more Vampires as you finish casting Feast of Blood (in case you somehow sacrifice one to produce mana) or as Feast of Blood resolves.