Ski-Mask, the Slump God

When Ski-Mask, the Slump God enters the battlefield, gain X treasure tokens, X being this creature's toughness. This creature's toughness is equal to the number of Demon tokens on the battlefield.
Afflict 5, Lifelink, Skulk, Slump (A creature with Slump has indestructible as long as you have a demon.)