Ulamog, the Infinite Gyre [Rise of the Eldrazi] Human Knight Whenever a player casts a

Whenever a player casts a spell with mana value equal to the number of charge counters on Chalice of the Void

Set: Mirrodin Type: Artifact Rarity: Rare Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it

put it into your hand

If you don't

Ulamog, the Infinite Gyre [Rise of the Eldrazi] Human Knight Whenever a player casts aSet: Rise of the Eldrazi Type: Legendary Creature Eldrazi Rarity: Mythic Cost: {11} When you cast this spell, destroy target permanent. Indestructible Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.) When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.