Shifting Alliances

All players place their commanders in a pile. Each player randomly selects a commander creature from that pile. For the remainder of the game each player is the owner of that creature and they may be played as if their casting cost were colorless for rest of the game though the players deck will still be considered it's original color identity in all other instances. Once this spell resolves place the current commander creature in whatever zone that player's previous commander creature was occupying.