Amulet of Sacrifice

This amulet bears the symbol of a deity inlaid with precious stones or metals. While you wear the holy symbol, you gain a +2 bonus to spell attack rolls and the saving throw DCs of your spells.

While you wear this amulet, you can use your Channel Divinity feature without expending one of the feature’s uses. Once this property is used, it can’t be used again until the next dawn.

When expending a spell slot to cast a healing spell on someone other than yourself in combat, you must add a 1d4+1 to the amount healed. You take 1d4 as necrotic damage, and your maximum health is reduced by the same amount until a short or long rest. 

You can break the curse in the usual ways. The amulet then becomes an Amulet of Devotion +1.

Notes: Bonus: Spell Attacks, Bonus: Spell Save DC, cleric or paladin, Cursed