Soul Assault is a skill located in the Soul Magic (which can be found in the World skill tree). Soul Assault is an ultimate. Soul Assault is a morph of Soul Strike
Soul Assault deals the following types of damage: Magic Damage. Which means that it gets buffed by the following blue champion point trees: Elemental Expert, Elf Born, Master at Arms, Spell Erosion. Also the following red champion point trees protect against this skill: Elemental Defender, Iron Clad.