Planar Chaos — Rare
Temporal Extortion rulings:
2/1/2007 : When this spell is cast, its when you cast ability triggers and goes on the stack on top of it.
2/1/2007 : As the triggered ability resolves, the active player gets the option to perform the action. If that player declines, the next player in turn order gets the option. As soon as any player performs the action, the spell is countered, but the remaining players still get the option. If all players decline, the spell remains on the stack.