Cheapest priced copy (Magic 2011): $0.35 at Card Kingdom, near mint, their price list as of .
Phantom Beast 
Creature — Illusion Beast · 4/5 · Common · Magic 2011 · #69
When this creature becomes the target of a spell or ability, sacrifice it.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2011 | 69 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 15 August 2010If Phantom Beast becomes the target of a spell or ability, Phantom Beast’s ability triggers and goes on the stack on top of that spell or ability. Phantom Beast’s ability will resolve (causing it to be sacrificed) first. Unless the spell or ability has another target, it will then be countered when it tries to resolve for having no legal targets.