Herik, Thawed Apocalypse

+1: (This card transforms from Iced Omen.) Create a 0/5 blue Ice Wall creature token with defender. Put an ice counter on this card.
+1: Create a 2/2 blue Ice Warrior creature token with vigilance.
-13: As an additional cost to use this ability, remove three ice counters from this card. Destroy each creature you don't control.