Troll Physiology User with this ability either is or can transform into an Troll (including Fomorians and Jötunn), Primal beings that are connected to Chaos and the uncontrollable/destructive forces of nature including Darkness, Mist, Cold and others. Trolls are notoriously variable beings, both in appearance, (humanoid, usually) and size (smaller than human to something closer to geological range): average troll could be described as close to human in size and form if somewhat homely looking, give or take horns, unusually shaped/sized ears, possibly tail and/or fur and coloration. Some are wildly more variable in number and/or proportions of eyes, arms and/or heads, they may have scales or a skin or rock/bark etc., larger ones may have trees growing on them. And few are supernaturally beautiful. Rawr