Shield of the Uven Rune
S · Very Rare · Requires attunement
Attunement
Description
You are immune to Cold damage.
Immediately after a creature hits you with a melee attack, you can use your reaction to deal Necrotic damage to that creature.
You can cast the spell from the shield (save DC 17). The spell does not require and lasts for 1 minute. Once you cast the spell from the shield, you can't do so again until you finish a short or long rest.
You can transfer the shield's magic to a nonmagical weapon by tracing the uven rune on the weapon with one finger. The transfer takes 8 hours of work that requires the two items to be within 5 feet of each other. At the end, the shield is destroyed, and the rune is etched or burned into the chosen weapon. This weapon becomes a rare magic item that requires attunement. It has the properties of a +1 weapon. The bonus increases to +3 when the weapon is used against one of the following creature types, chosen by you at the time of the magic weapon's creation: aberrations, celestials, constructs, dragons, elementals, fey, fiends, giants, or undead.