Sands of Illusion

In the world of Sahir, a world of vast deserts and sparkling oasis where water is a controlled resource and kingdoms war over new oasis when they are found. the oasis themselves are constantly fed fresh water thanks to ancient magic that no longer exists. You join either one of the many kingdoms, a guild, or a rogue faction and start your adventure. Will you help protect a kingdom or bring it to ruin? (Suggestions on locations and races are welcome)