Cheapest priced copy (Ice Age): $0.35 at Card Kingdom, near mint, their price list as of .
Venomous Breath 
Instant · Uncommon · Ice Age · #273
Choose target creature. At this turn's next end of combat, destroy all creatures that blocked or were blocked by it this turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ice Age | 273 | Uncommon | $0.35 | — |
| Mercadian Masques | 281 | Uncommon | $0.35 | $2.49 |
One ruling from Wizards of the Coast
- 4 October 2004It affects creatures that had blocked the target when this spell resolves, even if they are no longer blocking the creature.