I was going through killing Lycanthropes and noticed that when they summon their Werewolves, their models are completely invisible but they still attack, cast buffs, and deal touch damage while being invisible. Since this isn't more than a visual bug, it's not that important but still a bug nonetheless. Edit: It looks like they're only invisible if you don't leave the map while they're alive, but if you leave the map and go back in, they're visible again.