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.
Defender, indestructible: Monstrosity 10. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)As long as Colossus of Akros is monstrous, it has trample and can attack as though it didn't have defender.
FlyingWhen Abhorrent Overlord enters, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)At the beginning of your upkeep, sacrifice a creature.
+2: Exile the top three cards of target opponent's library.−X: Put a creature card with mana value X exiled with Ashiok, Nightmare Weaver onto the battlefield under your control. That creature is a Nightmare in addition to its other types.−10: Exile all cards from all opponents' hands and graveyards.
When Gray Merchant of Asphodel enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each in the mana costs of permanents you control counts toward your devotion to black.)
: Each player exiles the top card of their library face down., , Sacrifice Pyxis of Pandemonium: Each player turns face up all cards they own exiled with Pyxis of Pandemonium, then puts all permanent cards among them onto the battlefield.