Cheapest priced copy (Guildpact): $0.49 at Card Kingdom, near mint, their price list as of .
Bioplasm 
Creature — Ooze · 4/4 · Rare · Guildpact · #81
Whenever this creature attacks, exile the top card of your library. If it's a creature card, this creature gets +X/+Y until end of turn, where X is the exiled creature card's power and Y is its toughness.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Guildpact | 81 | Rare | $0.49 | $0.99 |
One ruling from Wizards of the Coast
- 1 February 2014The reminder text printed on Bioplasm is no longer correct. Abilities that define a creature's power (and toughness) apply in every zone. The value of * is defined by such an ability.