Alatreon, the Brilliant Dark

{3}{u}: This creature becomes Blue and gains Hexproof until end of turn
{3}{w}: This creature becomes White and gains Flying until end of turn.
{3}{r}: This creature becomes Red and gains Menace until end of turn.

Escaton Judgement - If you have used all previous abilities and Alatreon has not left the battlefield at the beginning of combat, exile all creatures opponents control.