Psychic Assault

You gather psychic energy into a single, powerful blast, assaulting a single target's mind, causing damage and cognitive decline.

Choose one ability score: Int, Wis, or Cha.

Subject suffers heavy psychic damage (Int/Wis/Cha half, as chosen). Additionally, if they fail the saving throw, they suffer disadvantage to the next check involving that ability score.

Metamagic