"Despite rumors to the contrary, the giant mantis is a natural beast, and like its smaller cousin it is cold and merciless. Sure, it's difficult to believe your own eyes when you seen an insect of that size. Now, imagine fighting one!"Summon Mantis is a fifth-level Nature Magic spell in Heroes of Might and Magic IV that costs twelve spell points and summons a number of Mantises based on the level of the caster.
As with the other level four summoning spells, this casts a fairly useful number of Mantises, though it is probably best cast after one or two rounds of casting buff spells such as Mass Fortune and Dragon Strength. If you have a choice, which level 4 creature to summon is largely a question of personal preference and tactical situation. Very few units can reach out and tie up a dangerous stack the way Mantises can. Even the dreaded Black dragons can be held at bay for a turn or two by a small group of Mantises, hopefully long enough for your non-caster ranged units to soften them up.