Holy Shield Guardian

Loyalty. The Holy shield Guardian is only loyal to the person that is it's master.

Radiant Battery. If the Holy shield guardian gets hit with any radiant damage, the Holy Shield guardian heals the amount or radiant damage.

Telepathic link. The Holy Shield Guardian has a telepathic link to it's master at all times unless either it's master is unconscious or if the Holy Shield Guardian is destroyed.

Death Packed. If the Holy Shield Guardian's master fails all 3 death saving throws then the Holy Shield Guardian erupts in a blinding light dealing 25 Radiant damage, ignoring resistances, to all hostile creatures around it. After erupting the Holy Shield Guardian is gone.

Multiattack. The guardian makes 3 fist attacks.

Fist. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (3d4 + 4) bludgeoning damage + 4 (1d6) Radiant damage

Shield. When a creature makes an attack against the allie of the guardian's creator, the guardian grants a +2 bonus to the wearer's AC if the guardian is within 5 feet of the wearer.