The Skullspore Nexus

髑髏胞子の結節点 (The Skullspore Nexus) (ja)

Legendary Artifact (CMC 8)
This spell costs 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.
, : Double target creature's power until end of turn.