The Iceborn

Ancient tribes of nomads who wander the frozen edges of the world sometimes are led by a warlock who has made a bargain with an ancient being with dominion over ice.

Frost Warrior

Starting at 1st level, you gain proficiency with martial weapons.

Frozen Strikes

Starting at 1st level, your weapons strike like a gale of frigid wind. When you hit with an attack using a weapon you are proficient with, you can deal cold damage instead of the weapon's regular damage type. In addition, once on each of your turns when you hit with a weapon attack, you can deal an extra 1d4 cold damage.

The extra cold damage increases when you reach certain levels in this class, increasing to 1d6 at 6th level, 1d8 at 10th, and 1d10 at 14th.

Frostbitten Soul

When you reach 6th level, your connection with the Iceborn has suffused your body. You have resistance to cold damage, and once on each of your turns when you roll cold damage, you can add your Charisma modifier to the damage roll.

Binding Ice

When you reach 10th level, you can call on the power of the Iceborn to trap your foes. When you hit a creature with a weapon attack, you can cause ice to envelop the creature. The creature must make a Constitution saving throw. A creature that fails the save takes cold damage equal to your warlock level + your Charisma modifier and is restrained until the end of your next turn. A creature that succeeds the save takes half as much damage and isn't restrained. Once you use this feature, you can't do so again until you finish a short or long rest.

Frozen Defense

Starting at 14th level, your pact with the Iceborn has granted you enhanced defense against extreme heat and cold. You have immunity to cold damage, and resistance to fire damage. In addition, as an action, you can give a number of creatures within 30 feet of you resistance to cold damage and fire damage for 1 hour.