The Footsteps of Grai
Trollkin sorcerers are a subspecies of the trollkin, due in part to their magical lineage. This alternate heredity causes them to slim and to lose pigmentation.
As it is to be expected, trollkin sorcerers are infused with magical blood, making them especially potent at their namesake.
Since the sorcerers are more so concentrated with the workings of the arcane rather than martial matters, they have a -2 to str, but a +4 to cha.