Select one target that you can see and cause a shadowy hand to emerge from their shadow reaching for their throat. The shadowy hand chokes the target dealing 1d10 damage and stops any spell that requires a verbal component for one hour. Each round that passes, the person being choked can make a wisdom save to disbelieve. If that save is successful, the spell ends immediately. 

" You are no match for the power of Zaad!"- Acolyte from Zaad's shadow cult

When you cast Zaad's Shadow Crusher at with a spell slot of 4th level or higher, it increases the damage dealt by 1d10