Mass Healing is a third-level Life magic spell from Heroes of Might and Magic IV. It costs five mana and cures all friendly targets of a number of points of damage based on the level of the caster. It also cures Poison and Plague on all friendly targets.
As much as it tires me, I never feel better than after I have cured numerous souls of their pain.
Useful if you have a few injured heroes and/or high level creatures and especially if an enemy just cast plague on you, as all your creatures will now be cured. The amount of health restored is slightly more than 2/3 that of Bind Wound.