Torinn’s Rotting

The target makes a Constitution saving throw equal to your spell save dc. On a failure the target takes 6d8 necrotic damage and takes a 3d8 necrotic damage on the start of its turn, the target can make another Constitution saving throw on the end of its turns. On a success it takes half damage and does not take the extra damage on the start of each of its turn.

For each level above 5th it is cast the damage of both effects increase by 1d8.