Cthulhu, Sunken in R'lyeh

Cthulhu, Sunken in R'lyeh isn't a creature unless your devotion to black, blue, and green is fifteen or more.
At the beginning of each players upkeep, flip a coin. If its heads, gain control of target creature.
If its tails, target opponent gains control of target creature.
Flying, Trample, Menace, Fear, Indestructible.