What if level 98 spells (will come out) will be located in Aquila? I've thought about places already. Death: in Tartarus, I did see a house, it will be located in there. Life: I guess everybody already seen it, in the door near mount Olympus entrance, which above it there's a big hydra (hard to miss it). Myth: if people seen it, there are some caves in garden of Hesperides, one of the will lead to myth quest location. Balance: in the cave behind erythia (I think I spelled it wrong, the bird leads to Tartarus quest). Storm: going to the stairs or whatever it is, which appears when you get Atlantea quest, until you get under the water, there you'll be teleported to the storm spell quest location. Fire: the boat near Atlantea entrance. Ice: the house which is behind the recipe vendor you can speak with after completing mount Olympus.
Unlike other worlds and spells quests, those spells quests won't be in the world there you get to level 100, instead of it, it will be in Aquila.