Another nasty one is petrify. Although not as bad as plaguebreath. not fun to sit and watch as the mist liz batters you down to nothing. all in all watch it when fighting these things if you are below lvl 14.
Watch out for the Plaguebreath on these guys, they use it right before death. It'll cut you down by 100HP unless you have an antidote or poisona handy.