Lightning of Three Prongs is a sword form. The movement of the form is unknown.
During their fight in Falme, Rand al'Thor meets Turak Aladon's use of Leaf on the Breeze. During his practice in Caemlyn, one of Rand's opponents uses this form. Rand breaks through it with The Boar Rushes Down the Mountain. Either Galadedrid Damodred or Eamon Valda used this form while the other used Lizard in the Thornbush as a counter.