Seraziel is the last Death Maiden found in game. She has Electrified, Thunderstorm, Fast and Vortex affixes. In addition, if she is not killed in 30 seconds, she will briefly shield herself and summon Winged Assassins at her side.
Killing Seraziel allows players to break the Soul Prison seals. Upon doing so, they immediately gain the power of the dead to defeat Malthael.