Ancient Orcs' Amulet

This stone amulet is engraved with pictograms of a tree surrounded by archaic planarite of distant worlds, all depicting the four tangible elements: air, earth, fire, and water.

While you are wearing the amulet, you gain resistance to your choice of acid, cold, fire, lightning, or thunder damage. Whenever you end a long rest attuned to this amulet, its stone briefly transmutes to gold, and you can change the resistance.