Prerequisite: 11th level

You can use your action to deliver a powerful ice breath in a 30-foot cone. All creatures in the area must succeed on a Dexterity saving throw, or take 5d6 cold damage and have their movement speed halved for 1 minute. On a success, the creature take half damage and suffer no additional effects. Creatures made out elemental fire or water take 10d6 cold damage instead.

Once you use this feature, you can't use it again until you finish a long rest.