Cheapest priced copy (Phyrexia: All Will Be One): $0.35 at Card Kingdom, near mint, their price list as of .
Serum-Core Chimera 
Creature — Phyrexian Chimera · 2/4 · Uncommon · Phyrexia: All Will Be One · #215
Flying
Whenever you cast a noncreature spell, put an oil counter on this creature.
Remove three oil counters from this creature: Draw a card. Then you may discard a nonland card. When you discard a card this way, this creature deals 3 damage to target creature or planeswalker. Activate only as a sorcery.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Phyrexia: All Will Be One | 215 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 4 February 2023You don't choose a target for Serum-Core Chimera's last ability at the time you activate it. Rather, a second "reflexive" ability triggers when you discard a card this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.