Arixmethes, Slumbering Isle (Serial Numbered) - March of the Machine: Multiverse Legends (MUL)

Arixmethes, Slumbering Isle enters the battlefield tapped with five slumber counters on it.
As long as Arixmethes has a slumber counter on it, it's a land. (It's not a creature.)
Whenever you cast a spell, you may remove a slumber counter from Arixmethes.
T: Add GU.