Hei Tiki Amulet

Wondrous item (requires attunement, very rare)

This pounamu (greenstone) amulet is a stylized rendition of the first man, Tiki, typically crafted with a large head and eyes, with hands on thighs. While worn, you gain advantage on saving throws against enchantment and illusion spells. You also gain advantage on Wisdom (Perception) checks made to avoid being surprised.

You can invoke two other powers from the hei tiki amulet, and can spend an action to use each once per day. The first summons an invisible spirit that acts as if you had cast faithful hound, though it warns of intruders with the sound of disembodied drums rather than barking. With the second, you summon a solid protector that acts as if you had cast interposing hand, but appears as Large tiki mask or idol rather than a large hand.

While the protector is interposed between you and a creature, you gain advantage on one attack against that creature each round.