Halo of the Archon

This serene crown is woven from the rendered feathers and golden hide of a slain archon, formed into a thin ring of warm, perpetually-glowing light that hovers an inch above the wearer's brow. The halo casts soft white illumination in a 10-foot radius, gentle enough to read by but never harsh. Even in deepest darkness, the wearer's face remains softly lit.

While wearing the halo, you gain divine protection: you have resistance to necrotic damage, and undead and fiends have disadvantage on attack rolls against you. You are also immune to being magically frightened.

At-will, swift action; you may levitate, gaining a hover speed of 15 feet. While hovering, you cannot ascend higher than 30 feet above the nearest solid surface. You may dismiss the levitation as a free action and descend gently, taking no falling damage from any height while the halo is worn.

Once per encounter, as an immediate action when you or an ally within 30 feet would be reduced to 0 HP by an attack, you may invoke the halo's ward; the target instead has 1 HP remaining, and the source of the damage must pass a Cha save (DC 17) or be unable to attack the warded target until the end of its next turn.

The halo will not function for a wearer whose recent actions have been unmistakably and deliberately cruel. It does not require piety, only a refusal to wallow in evil.