Devastating touch

Anytime you cast a spell of 1st level or higher that targets only one creature, you can cast it with a range of touch through your shadow hand. When you do this, the target has disadvantage on any saving throw they make to avoid the effects of the spell, and you can re-roll any number of damage dice you would roll on a damage roll once. This invocation also works on spells with a range of touch, and casting spells this way does not provoke reactions from abilities that would otherwise be caused by casting a spell within melee range