Boa's Bola's

Fling a spinning set of lightning bolas at a target within range, make an attack roll against this target. On a hit, this spell does 1d8 lightning damage and sets the targets movement speed to 0 this turn. If the target has already moved this turn, they must make a DC 12 Athletics or Acrobatics check or be knocked prone.

This spells damage increases by 1d8 when you reach 5th level, 11th level (2d8) and 17th level (3d8).