Cheapest priced copy (Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Irresistible Prey 
Sorcery · Uncommon · Jumpstart · #406
Target creature must be blocked this turn if able.
Draw a card.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conspiracy: Take the Crown | 183 | Uncommon | $0.39 | $0.79 |
| Jumpstart | 406 | Uncommon | $0.35 | — |
| Rise of the Eldrazi | 188 | Uncommon | $0.49 | $2.49 |
4 rulings from Wizards of the Coast
- 15 June 2010If the targeted creature is an illegal target by the time Irresistible Prey resolves, the spell doesn’t resolve. You won’t draw a card.
- 15 June 2010If the affected creature attacks, the defending player must assign at least one blocker to it during the declare blockers step, unless that player controls no creatures that could block it.
- 15 June 2010You can target a creature you don’t control or that otherwise couldn’t attack that turn.
- 15 June 2010The creature affected by Irresistible Prey doesn’t have to attack that turn.