ukshadow said: "Yuukarin's capabilities? I'll tell you her capabilities: She is Hell unleashed."
That or she outsmarted Dosu and made her mistake the "Dosu Spark" mushroom with the "Dosu Idiotically Blows up" Mushroom.
Or the Original Yuuka shows up to aid a fellow flower aficionado, since, if my memory doesn't fail me, there was a shadowy cameo of yuuka kazami as some sort of memory or vision of the yuuka.