Investiture of Ice

Until the spell ends, ice rimes your body, and you gain the following benefits:

You are immune to Cold damage and have resistance to Fire damage.

You can move across Difficult Terrain created by ice or snow without spending extra movement.

The ground in a 10-foot radius around you is icy and is Difficult Terrain for creatures other than you. The radius moves with you.

You can use your action to create a 15-foot cone of freezing wind extending from your outstretched hand in a direction you choose. Each creature in the cone must make a Constitution saving throw. A creature takes 4d6 Cold damage on a failed save, or half as much damage on a successful one. A creature that fails its save against this effect has its speed halved until the start of your next turn.