(Multilimb) Hyshana, Joyful Killer is the main boss in the Festival of Souls raid event. It has 15 different levels, each increasing in HP from 68,000 to 1,000,000. Players have the normal 2 hour time limit to kill it before the boss disappears.
Quotes: "Let us fight! Let us maim! Let us revel in this bloody bliss!"