Although certainly not the strongest creature in the game, they are by far the most potentially dangerous, far exceeding even Black Dragons under the certain conditions. Like their predecessors, the difficulty in fighting ghosts lies in their creature ability, which causes them to convert any creature they kill into another Ghost for their stack. Because of this, a hero must never use low-tier creatures when fighting Ghosts, and especially not Peasants, which will simply be converted and used against you while being far more powerful as Ghosts. A clever hero will only field fifth- and sixth-tier creatures against these undead monstrosities.