Divine Intervention is a fifth-level Life magic spell from Heroes of Might and Magic IV. It costs twelve mana and removes a portion of the damage from all friendly targets, and resurrects slain heroes.
Our commander made a mistake and fell into a trap. Many were injured. Some were dead. Something had to be done, so I raised my hands to the sky and begged for help.
The slightly cryptic description actually means that this casts heal on all your creatures and heroes. In a wonderful side effect, it will also resurrect all dead heroes (as long as there isn't another stack standing on top of their dead body), which can be very useful.