Deathly Eyes

You stare at someone with a dealthy stare dealing 1d12 damage increasing at 5th level to 2d6 and 1d4, then 9th level 3d6 and 1d4, then 14th level 1d20 and finally at 17th level 1d20 and 1d12. Once per long rest, and after you use it you get disadvantage on your next attack roll. This spell is only for warlocks, sorcerys, and wizards. They must make a 15 con save, if they succeed they take half damage.