Eternal Frost
Weapon (bow) legendary (requires attunement)
Dissonance of Ice
This magic weapon is a bow. This bow allows you to cast Eldrich Blast when firing it if you have that cantrip.
The Eldrich Blast and this weapon deal cold damage. Enemies hit by this weapon have their movement speed halved.
You gain three charges, you can cast Ice Knife or Frost Fingers with these charges, they replenish on a long rest. These spells can be cast in place of Eldrich Blast when using this weapon.
You can also cast wall of ice once per day with this bow as a feature.
Chilling Armor
Holding this weapon causes ice to form around you and creates armor.
This armor has an AC of 15 + DEX mod.
When you are attacked this armor functions the same as Armor of Agathys up to 4 times. These charges replenish on a long rest.