The Skullspore Nexus [The Lost Caverns of Ixalan]

Set: The Lost Caverns of Ixalan 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.