白骨精, Fenghua Zhong on ArtStation at https://www.artstation.com/artwork/6o4lV
Angels of the higher orders cannot be summoned by even the most powerful sorcerers. More often than not, the sorcerer will accidentally summon one of the Fallen. In this case, if ANY part of the ceremony fails, the results can be catastrophic.
Death Knight Stephen Smithe Giving a Helping Hand to an Abandoned Girl