Cackle

An insidious laugh envelopes deep into the mind of creatures. All creatures that you want to harm within this range make a intelligence saving throw. On a fail they take 1d10 psychic damage and have disadvantage on attacks on their next turn.

At lvl 5 it increases to 2d10, Lvl 10 3d10,  Lvl 15 4d10, Lvl 20 5d10