Echo of Souls

2nd-level conjuration

Casting Time: 1 bonus action
Range: 60 feet
Components: V, S
Duration: 1 minute

You call upon ambient spirits to protect one willing creature you can see within range. The first time the protected creature takes damage from another creature, the spirits curse its soul. The attacking creature must make a Charisma saving throw. On a failed save, the creature takes 2d8 radiant damage immediately, and half as much radiant damage at the end of its next turn. On a successful save, a creature takes half the initial damage and no damage at the end of its next turn.

At Higher Levels. If you cast this spell using a spell slot of 3rd level or higher, you deal an additional 1d8 radiant damage per each slot level above 2nd.