Greater Storm Atronach is a skill located in the Daedric Summoning (which can be found in the Sorcerer skill tree). Greater Storm Atronach is an ultimate. Greater Storm Atronach is a morph of Summon Storm Atronach
Greater Storm Atronach deals the following types of damage: Shock Damage. Which means that it gets buffed by the following blue champion point trees: Elemental Expert, Elf Born, Spell Erosion, Thaumaturge. Also the following red champion point trees protect against this skill: Elemental Defender, Thick Skinned.