When Braccus Rex calls up those who were sworn to the Void King, I felt really cheated.
When I killed his allies and deliberatly sucked away their souls, a terribly evil act. But I knew if I did not, they would later show up in a bad situation.
Now, cue the fight against Braccus and all the mean people I killed and soul-killed are there. Without a comment.
Seriously: If you give the option to destroy someone's soul because they are so evil and need to get eliminated from the board, you need to take them off. Else do not allow the soul-sucking of X, Y and Z in the first place or at least explain why there are still around to fight me (as I just attempted to prevend by being really evil).
