"The knights spent a full day preparing for their attack, praying, casting spells, and polishing their armor. Pointless! But at least they died in shiny armor."Cancellation is a first-level death magic spell in Heroes of Might and Magic IV that costs two spell points and removes all beneficial spells from an enemy stack.
Although of no use in curing your own units of curses, this spell is extremely effective against Life and Order casters. Against Order, this spell can remove buffs like Precision and Flight, and can also destroy an entire stack of illusions in one casting. Use this spell against Life casters to bring down those obnoxious wards. Finally, this spell is great for removing potion effects (especially the Potion of Immortality) on heroes.