Misthollow Griffin [Avacyn Restored] Bird Scout If a Rigger you control

If a Rigger you control would assemble a Contraption

Scourge of Kroog enters the battlefield tapped and doesn't untap during your untap step

Set: Shadows over Innistrad Type: Instant Rarity: Uncommon Cost: {2}{R} Geistblast deals 2 damage to any target

it's sacrificed when it enters the battlefield

Set: Innistrad Type: Sorcery Rarity: Uncommon Cost: {4}{B} Return target creature card from your graveyard to the battlefield

Misthollow Griffin [Avacyn Restored] Bird Scout If a Rigger you controlSet: Avacyn Restored Type: Creature Griffin Rarity: Mythic Cost: {2}{U}{U} Flying You may cast Misthollow Griffin from exile. For some creatures, existing is only a whim.