Mad Bull

'Mad Bull is a demon found in Iris and the Giant.

"The whip of this mad bull resurrects the defeated skeletons. I'd better take care of it a quickly as possible."

Location
In Path of the Giant, Mad Bulls can be found on Floors 2, 4, 5W, 9 & 15, and additionally on Floors 3 & 5A on Easy & Classic difficulty and Floors 5 & 14 on Nightmare difficulty.

In Path of the Ferryman they can be found on Floors 6, 22 & 24, and additionally Floor 23 on Nightmare difficulty.

Strategy
Since Mad Bulls will resurrect any demons in the Skeleton family at the end of the turn, they themselves must first be defeated. They don't deal any damage themselves, so can be used as crowd control, i.e. kept in the first row while you defeat more troublesome enemies in other columns or using ranged cards.