Underworld Cerberus

Underworld Cerberus

Creature - Dog | Power/Toughness: 6 / 6 (CMC 5)
Underworld Cerberus can't be blocked except by three or more creatures.
Cards in graveyards can't be the targets of spells or abilities.
When Underworld Cerberus dies, exile it and each player returns all creature cards from their graveyard to their hand.