Pixis, Tyrant of Discord

Indestructible
As long as your devotion to red and black is less
than five, Pixis isn't a creature.
At the beginning of combat on your turn, flip
a coin. If you lose the flip, switch control of
each creature you control and each creature
another target player controls.
The souls of mortals are like flames; they burn gloriously until they meet an untimely demise.