"I put this on a young knight once without him knowing it. He stupidly stood toe-to-toe with a skeleton thinking he could easily beat it. Boy, was he ever wrong!"Disrupting Ray is a first-level Death Magic spell in Heroes of Might and Magic IV that costs two spell points and reduces the target unit's Melee and Ranged defense by 20%.
Use this spell to soften up a target just before your heavy-hitters attack them.
For such a lowly spell, it can make an appreciable difference even in late-game battles. Since there is no mass version (except for Unholy Song, which only affects Life units), this spell remains useful throughout the game.