Spell Symmetry

Spell Symmetry is a Guild skill, found in the Mages Guild Skill line. A useful sustain ability.

Spell Symmetry
6000 Instant Cast Target: Self Base Skill: Equilibrium
Barter with Oblivion to trade vitality for power, sacrificing your Health in exchange for 3000 Magicka. After the exchange is complete, the cost of your next Magicka Ability is reduced by 33% for 5 seconds. The exchange reduces your Healing Done and damage shield strength by 50% for 4 seconds.

Spell Symmetry is a morph of the Equilibrium base skill. The other morph is Balance.