The Skullspore Nexus (Promo Pack) [The Lost Caverns of Ixalan Promos]

Set: The Lost Caverns of Ixalan Promos Type: Legendary Artifact Rarity: Mythic Cost: {6}{G}{G} This spell costs X less to cast, where X is the greatest power among creatures you control. Whenever one or more nontoken creatures you control die, create a green Fungus Dinosaur creature token with base power and toughness each equal to the total power of those creatures. 2, T: Double target creature's power until end of turn.