Deviljho, The Great Devourer

Trample, Vigilance, Menace

At the beginning of your upkeep, you may
exile a Great creature you control. Deviljho,
The Great Devourer gains power and
toughness of all exiled Great creatures.

If three or more great creatures have been
exiled, Deviljho, The Great Devourer becomes
a Great creature and gains indestructible.