Nemesis Mask [Darksteel] God if Clockwork Beast attacked or

if Clockwork Beast attacked or blocked this combat

Then exile it

Set: Shadows over Innistrad Prerelease Promos Type: Creature — Zombie Giant Rarity: Rare Cost: {2}{B} Diregraf Colossus enters the battlefield with a +1/+1 counter on it for each Zombie card in your graveyard

you may pay {2}

Nemesis Mask [Darksteel] God if Clockwork Beast attacked orSet: Darksteel Type: Artifact Equipment Rarity: Uncommon Cost: {3} All creatures able to block equipped creature do so. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)