"Reviving embalmed corpses of ancient Mages are a serious ordeal for any army. Attacking their enemies, the Mummies can curse them with various spells of Dark Magic. Besides, the Mummies are able to resurrect their allies." — In-game description
Mummies are a neutral undead unit in the video game Heroes of Might and Magic V. Unlike earlier iterations of the creature type, the Ashan mummies are able to cast their Curse as a spell as well as cursing any enemy regularly attacked which can, as usual, greatly hinder another creature stack's ability to attack.
Players should keep in mind that they have a high initiative but at the cost of speed. While they can now cast Curse as a spell and therefore at range, doing so will cost the creature stack its turn. A clever wielder will field them to protect the army's shooters rather than attempt to send them into the heat of battle.