The Xiffens
Living in the most controversial zone on the planet, the Xiffens are known to be the most long lived and powerful humanoids on Blue Stone. Their Oasis is their sanctuary and their curse. Growing dependent of the fumes within, they cannot leave the place, but in there they are so connected with the environment that they are almost gods. Their identification stone is plucked from the muddy waters, very smoothly shaped, and their mediation mark is engraved on it by one of the priestesses that has lived long enough and is so in tune with the place she can make rocks melt. Only them can provide such a stone in the muddy oasis.