Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Retaliation 
Enchantment · Uncommon · The List · #USG-272
Creatures you control have "Whenever this creature becomes blocked by a creature, this creature gets +1/+1 until end of turn."
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | USG-272 | Uncommon | $0.35 | — |
| Urza's Saga | 272 | Uncommon | $0.35 | — |