Curse
From the Might and Magic Wiki - Might and Magic, Heroes of Might and Magic, King's Bounty
Level: 1
Cost: 2 mana
[edit] Description
Curse causes the target to always inflict the minimum possible damage in their damage range.
[edit] Comments
Note that creatures can have quite variable damage ranges. For example, Orcs do 1-3 damage per unit, while Peasants do 2-3 damage per unit. Thus, this spell is far more crippling to a stack of Orcs than it would be to a stack of Peasants.
In fact, not surprisingly, Chaos creatures have the widest damage ranges, and so are most affected by Curse, though this spell is still quite effective on most level 4 units (which tend to have very wide damage ranges, like 30-55), and on fighting heroes.
One thing that makes Curse quite useful is that it is one of the few good debuffs at Death's disposal that works on virtually anything, for it is not a mind spell, nor does it ravage the body.
If cast on a unit enjoying the effects of the Bless spell, Curse will negate it and leave the unit cursed instead.
Order's level two spellcaster unit, the Mage can cast Curse in combat.

