medusa-
in her normal attacks there is a chance she'll "stone" you, this debuff will make you kami unable to attack nor use skill
also, when raging and using her overdrive skill (attacking 3 random kami) the damage will be much higher witht this debuff.
and in rahab i think she attacked a single target but had attack buff.
also, in ragnarok level she have only 1 chatging orb