Cheapest priced copy (Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Nocturnal Feeder 
Creature — Vampire Rogue · 2/1 · Common · Jumpstart · #16
Flying
When this creature dies, each opponent loses 2 life and you gain 2 life.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart | 16 | Common | $0.35 | — |
2 rulings from Wizards of the Coast
- 23 June 2020In a Two-Headed Giant game, Nocturnal Feeder’s ability causes the opposing team to lose 4 life and you to gain 2 life.
- 23 June 2020If your life total is brought to 0 or less at the same time that Nocturnal Feeder is dealt lethal damage, you lose the game before its ability goes on the stack.