Ring of Sinew and Steel

Ring Varies (this item requires attunement)

This glows with the same light that as if it has just come out of the forge, but dark flecks occasionally fall from the ring.
This ring has three charges and all charges are regained at dawn. While the wearer is attuned to the ring, the wearer can use their reaction and expend a charge in order to half the damage to the wearer from any source that would deal necrotic or fire damage.
In addition, the wearer can see a bright aura shedding from any undead creature and the ring sheds dim light for 10ft.