This spell costs {X} less to cast, where X is the total power of creatures you control. Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Indestructible

Lord of Extinction's power and toughness are each equal to the number of cards in all graveyards.

Malignus's power and toughness are each equal to half the highest life total among your opponents, rounded up. Damage that would be dealt by this creature can't be prevented.

Trample Cycling {1}{G} ({1}{G}, Discard this card: Draw a card.) When you cycle this card, put a trample counter on target creature you control.

Whenever this creature attacks, you may mill three cards. When this creature dies, return all land cards from your graveyard to the battlefield tapped.