Weathered Guardian

''You never feel truly alone now, but there's no sense of lingering fear or paranoia. It feel like you're being watched over, protected by an unseen entity. Like an old friend.''

Wonderous Item, requires attunement
This pair of battered iron rings are connected by a small iron chain and are designed to be worn on the middle and ring fingers. While attuned to it, once per month, whenever you would be the subject of an attack, you may use your reaction to conjure the Weathered Guardian to take the damage for you. It has resistance to this initial damage. The Guardian fades back into the Ethereal Plane after combat ends or when you dismiss it as an action.

Additional Guardian Stats
19 AC (Splint, shield)

Speed 20ft

Darkvision

Understands the languages of its charge but can't speak

Resistant to non magic weapons

Immune to poison damage, the poisoned condition, exhaustion, fear, (the other construct things i cant remember)

Multiattack

Longsword +6 to hit, 1d8+3 damage

Reaction: The Weathered Guardian moves up to its speed and imposes disadvantage on an attack roll targeting whoever is attuned to its ring if the guardian is within 5ft of them.

Bonus Action: At the start of its turn, the guardian drop its speed to 0 and forgo an attack to give its charge 3/4 cover as long as they remain within 5ft of each other.

Old Beyond Repair: The guardian cannot be healed, and it and the rings crumble to dust when it drops to 0 hit points. Each week it spends in the Ethereal Plane allows it to roll and expend a hit die to repair itself. It does not regain hit dice or benefit from short or long rests.