Mass weakness is a fourth-level Death Magic spell that costs eight spell points and causes all enemy units to do 25% less damage in combat.
Endurance and strength are important in battle. The army that weakens first usually loses. I just help it along a little.
Mass Weakness is a mind spell that saps the attack strength of all enemy units. Cast before units can engage, this curse should significantly reduce the casualties your side suffers in the battle. Elementals, constructs, and undead are immune.
Mass Weakness inflicts the same status effect as the lesser version, Weakness, and the effects do not stack.