Just off the coast of the main continent, lies an island highly sought after by elementalist wannabes. The reason for it is simple, the island has everything. Fertile soil, that even the weakest of crops can thrive in, clean water so clear, that one can always see the bottom. Winds powerful enough to topple trees and lift rocks, and gentle enough to to barely rustle even the most delicate of leaves. And mountains of fire, where lava pours from their peaks constantly.
However, the risks associated with the island is great, for the earth itself seems to vent its rage through it. The earth shifts and reorganises itself constantly, the fertile lands may just as soon become blacken stone, the rivers may cease flowing with little warning, and entire mountains be reduced to plains. Due to the islands many myriad of forms and constant change, the island has earned itself the name, Roil.
Despite the risks though, there are many experienced elementalists seeking control of the island, and now that the only solution between the various elementalists is all out war. Whether it means pulling polical strings to ally entire nations with them, or hiring mercenaries, the entire island being both the battlefield and the prize. Thus it can to be that you were hired by an elementalist, to fight on his side.
(You can choose to be on a different side than everyone else. After all... it is a battlefield.)