Death Kiss

You blow a deadly kiss towards a creature that you can see within range, it must make a Wisdom saving throw. The target takes 3d6 necrotic damage and falls prone for 1d4 turns on a failed save, or just half damage on a successful one. At the end of each of his turn, the target can make a Wisdom saving throw to stop being prone. This spell has no effect on undead or constructs.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.