A golem battle suit is the only one released, to the public, so far. I've heard there maybe raw mana-like powers, like an outward explosion.
Avatar of Melandru I can't seem to find a picture of the avatar of melandru skill in action however there is a video that the yogscast uploaded recently outlining racial abilities and i believe its in there. If anyone remembers Oakhearts (a mob from GW1) then you will have some idea of what the Avatar of Melandru will look like.