Cheapest priced copy (Murders at Karlov Manor): $0.35 at Card Kingdom, near mint, their price list as of .
Wispdrinker Vampire 
Creature — Vampire Rogue · 2/4 · Uncommon · Murders at Karlov Manor · #374
Flying
Whenever another creature you control with power 2 or less enters, each opponent loses 1 life and you gain 1 life.
{5}{W}{B}: Creatures you control with power 2 or less gain deathtouch and lifelink until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Murders at Karlov Manor | 243 | Uncommon | $0.35 | $0.49 |
| Murders at Karlov Manor | 374 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 2 February 2024Wispdrinker Vampire's activated ability affects only creatures you control at the time it resolves. Creatures you begin to control later in the turn won't get deathtouch or lifelink.
- 2 February 2024Wispdrinker Vampire's triggered ability checks the power of a creature only at the moment it enters the battlefield. If it enters with counters, those counters are included. If that creature's power is 2 or less when it enters the battlefield but becomes greater than 2 after the ability triggers, each opponent will still lose 1 life and you'll still gain 1 life.