Light or Dark magic.

Well, Dungeon is still very good with its mass spells! For example, the "Mass Weakness" spell on Terra Elementals! But, of course, by the time a hero arrives, there might not be anything left of the army! In Haven, there's a powerful spell called "Antimagic"! Haven also has some good spells, such as "Wrath," "Haste," and "Stone Skin"!