[Trexmaster]

Simply put, Wretched Oil is one of the best spells, if not /the/ best offensive spell in the game. The fact that it's capable of outdamaging magaisendo handily (at ranges where magaisendo would receive penalties), and like magaisendo, hits the entire field, and inflicts one of the most damaging status ailments in the game, is what makes it so.

The balancing factors of Wretched Oil would be its FP cost, and slightly reduced scaling compared to most spells--but the former doesn't matter much if the fight is over before FP becomes an issue, which ,if the user is packing enough damage, it probably will be.

My suggestion to balance it out, is to give Wretched Oil range penalties similar to magaisendo, and (maybe) have the penalties apply to the odds of status infliction. Perhaps have it be easier to inflict if done at a closer range?