Timesifter

Remember which player would have taken the next turn if Timesifter's ability hadn't triggered the first time. After Timesifter leaves the battlefield and all extra turns have been taken, that player takes the next turn.

Each time there's a tie for the highest cost, only the players involved in the tie continue.

If a player fails to exile a card, they can't take the extra turn.

If multiple extra turns are created in a game, the most recently created extra turn is taken first.