Wondrous Item, rare (requires attunement)
An Arrow of Balance can be used once a day to target an enemy or an ally. Enemies take 1d12 + your modifier as damage on hit, while allies take this amount as healing. The arrow never breaks and returns after battle. Once used, it's damage becomes normal and the arrow can be used once a battle.
Notes: Damage: Piercing, Damage, Combat, Bane