Board Thread:WARNING - SPOILERS AHEAD/@comment-11593970-20130706054527/@comment-2163322-20130730200429

That ugly shape Ms. Blake took must be her true form. If you guys payed attention, you would notice that she gained all of the abilities of her sacrifices: Fighting ability from Warriors, ability to heal herself from Healers, knowledge and plotting from Philosophers, and BEAUTY AND INNOCENCE FROM VIRGINS.

Not sure what ability Guardians have but I guess we're about to find out.