Excruciating Curse

In order to successfully cast Excruciating Curse, the caster must be Evil, or else bear true hatred for the target of the spell. If the caster meets neither condition upon casting the spell, they must make a DC 20 Wisdom saving throw. On a success, they become Evil. Otherwise, the spell fails. 

A crackling bolt of malevolent energy arcs from your fingertips toward a creature within range. Make a ranged spell attack against that creature. On a hit, the target writhes in pain. It is Paralyzed for the duration, and immediately suffers 1 level of exhaustion . 

On your turn, you may use your action to prolong the spell. Each time you do, the target suffers an additional level of exhaustion. The spell ends if you use your action to do anything else. The spell also ends if the target is ever outside of the spell’s range or if it has total cover from you. 

If a creature would suffer its sixth level of exhaustion in this way, it does not die. Instead, its Intelligence and Charisma scores become 1 as though effected by Feeblemind. The creature can’t cast spells, activate magic items, understand language, or communicate in any intelligible way. The creature can, however, identify its friends, follow them, and even protect them. At the end of every 30 days, the creature may make a wisdom saving throw. If it succeeds on its saving throw, this condition ends. It can also be ended by Greater Restoration, Heal, or Wish. 

After the spell ends, the target additionally experiences uncontrollable tremors, stutters, and tics. These persist until it has completed a long rest.