Armed Changer

Yu-Gi-Oh Card: Armed Changer
Available from these partners:
Armed Changer
Type:Equip Spell
Text:Send 1 Equip Spell Card from your hand to the Graveyard to activate this card. If the equipped monster destroys a monster as a result of battle, the controller of this Equip Card can add 1 monster with ATK equal to or less than the equipped monster from their Graveyard to their hand.
Printings: Dark Revelations Volume 4 (DR04-EN105)
Duelist Pack 2: Chazz Princeton (DP2-EN023)
Elemental Energy (EEN-EN045)