* The player who controlled the ability that restarted the game is the starting player in the new game. The new game starts like a game normally does:
-- Each player shuffles his or her deck (except the cards left in exile by Karn's ability).
-- Each player's life total becomes 20 (or the starting life total for whatever format you're playing).
-- Players draw a hand of seven cards. Players may take mulligans.
-- Players may take actions based on cards in their opening hands, such as Chancellors and Leylines.
* After the pre-game procedure is complete, but before the new game's first turn, Karn's ability finishes resolving and the cards left in exile are put onto the battlefield. If this causes any triggered abilities to trigger, those abilities are put onto the stack at the beginning of the first upkeep step.
* Creatures put onto the battlefield due to Karn's ability will have been under their controller's control continuously since the beginning of the first turn. They can attack and their activated abilities with
in the cost can be activated.