NHF – new heroes for Heroes V 3.1.

Idea bank:

A specialization for Necropolis (this specialization can be given to a new hero or used to replace Naadir's old specialization with this one).

After a won battle, part of the "living" creatures become ghosts, specters, or spirits, depending on their availability. Your ghosts gain invisibility for 3 turns before the start of the battle.