Unfindable Itch

When casted, target must succeed a Wisdom saving throw or be kicked prone and incapacitated. They also take 1d4 + their strength modifier of slashing damage at the start of their turn. They can repeat the saving throw at the end of their turn. If they fail that saving throw by more than five, the damage goes up to a d6. This happens every time they fail by more than five until they get to a d12.

At higher levels: When this spell is cast at higher levels, ad one damage dice for every level above 1st.