As with other monstrous classes we've published, this one is more inline with its mythological roots than the Dungeons & Dragons iteration. While some of the jinni types will sound familiar, they aren't linked to the classical elements: instead they determine if you're especially tough, or skilled with various types of magic.
In addition to changing your shape, you can command the winds and your supernatural nature (being formed from smokeless fire) renders you immune to mundane smoke and fire. Even though magical fire can still harm you, what you really need to watch out for is iron: its mere touch can hurt you, and when you're harmed by iron weapons the damage is rolled twice and you suffer the highest result.
As you level up you can improve your existing abilities or expand your repertoire, allowing you to curse your foes, turn invisible, grow in size and strength, draw upon the fire that burns within you, weave illusions, fly, and teleport great distances.