Cheapest priced copy (Zendikar): $0.35 at Card Kingdom, near mint, their price list as of .
Feast of Blood 
Sorcery · Rare · IDW Comics Inserts · #4
Cast this spell only if you control two or more Vampires.
Destroy target creature. You gain 4 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 118 | Uncommon | $0.49 | — |
| IDW Comics Inserts | 4 | Rare | $2.99 | — |
| Zendikar | 88 | Uncommon | $0.35 | $2.49 |
2 rulings from Wizards of the Coast
- 1 October 2009Whether 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.
- 1 October 2009If 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.