** Void Vessel damage can be increased with magic killer effects. If you are using [[Cloud of Darkness]], it'll deal 75% more damage, 206.5k. Similarly, [[Exdeath]] and [[Kefka]] has magic killer against humans, though in lesser value.
Evoking ====* Double evocation is the hardest part of the battle.* Fully resisted attack will not drop any Esper orbs, so if you are using units to kill him with elemental attack, they will have to take a backseat for most of the fight.* Use one or two dedicated unit to generate Esper gauge. It's '''important''' that the unit will have to equip a non-elemental weapon. Give them immunity to blindness.
* There are several ways to farm Esper orbs in this fight:
** Counter: [[Snow]] is the best unit for this. Kefka uses a lot of normal attacks, giving you more chance to counter. [[Cecil]] with [[Black Belt]] can also be used, and he covers side healing as well.