Karn, Breaker of Empires

: When Karn enters the battlefield, it no mana was spent to cast it, take and extra turn after this one, then exile Karn with 4 time counter on it.
+1: Exile target creature with 2 time counters on it. It gains suspend. Draw a card.
-7: Take an extra turn after this one, then exile Karn, Breaker of Empires with 4 time counters on it. It gains suspend.