12 Waves of the Holidays-

Mog designed this event as a mini-champ spawn, with a holiday touch, loosely based on the song "The Twelve Days of Christmas". The Carolers sing about each opponent that appears, going through Wave 1 through Wave 12. At Wave 12, the Boss then comes out with all the previous Waves' opponents.

12 Waves of the Holidays
(Thumbnail caption: On the first wave of Christmas, Lord Blackthorne sent to thee: A Ratman in Yew Tree!)