Cheapest priced copy (Conspiracy): $0.35 at Card Kingdom, near mint, their price list as of .
Warmonger's Chariot 
Artifact — Equipment · Uncommon · Rise of the Eldrazi · #226
Equipped creature gets +2/+2.
As long as equipped creature has defender, it can attack as though it didn't have defender.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conspiracy | 207 | Uncommon | $0.35 | $0.49 |
| Jumpstart | 490 | Uncommon | $0.35 | — |
| Rise of the Eldrazi | 226 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 15 June 2010If the equipped creature doesn’t have defender, the second ability simply doesn’t affect it.
- 15 June 2010The second ability doesn’t cause the equipped creature to lose defender. It just lets it attack.