Activate only when an effect that inflicts damage is activated. Negate its activation and effect, and randomly send 1 Fusion Monster from your Extra Deck to the Graveyard.
How to Get
Sends from Extra Deck to Graveyard
Negates the activation of Effect Monster's effect / Negates the activation of Spell Cards / Negates the activation of Trap Cards / Negates the effects of Effect Monsters / Negates the effects of Spell Cards / Negates the effects of Trap Cards