The Death Gate cycle is a much underrated series of books by Weis and Hickman and a definite read. The way the world is set out with all the elemental differences while keeping a similarity between them is amazing.
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"I was born of darkness. My fathers eyes closed before mine opened. I am not of this world or the other, and I have the right to be what I am..."
"I've put my trust in you, pushed as far as I can go. For all this theres only one thing you should know....."