Warmonger's Chariot
Artifact — Equipment
Equipped creature gets +2/+2.
As long as equipped creature has defender, it can attack as though it didn't have defender.
Equip 
(: Attach to target creature you control. Equip only as a sorcery.)
The best defense is a good offense.
Warren Mahy
Jumpstart (JMP)
• #490Rulings
If the equipped creature doesn’t have defender, the second ability simply doesn’t affect it.
(wotc • 2010-06-15)
The second ability doesn’t cause the equipped creature to lose defender. It just lets it attack.
(wotc • 2010-06-15)
Rulings
If the equipped creature doesn’t have defender, the second ability simply doesn’t affect it.
(wotc • 2010-06-15)
The second ability doesn’t cause the equipped creature to lose defender. It just lets it attack.
(wotc • 2010-06-15)