| Cuts the health of an adjacent creature in half. This damage is never directly lethal.
“Unbearable, isn't it? The suffering of strangers, the agony of friends. There
Agony is a level 5 Necromancy spell which functions as a single-target torment, cutting the HP of one adjacent target in half. It cannot deal lethal damage, but it can very quickly soften up powerful, uninjured targets like hydras or giants to make them more manageable.
Like torment, it is worthless against enemy demons and all undead, and reduced by negative energy resistance. And while it never misses, it can be resisted with high willpower, though its spell power multiplier of 5 makes successfully resisting it more difficult.
Necromancers begin with this spell in their libraries.
While the damage output of this spell is considerable, the caster must be able to survive a few turns at close range to take full advantage of it. Don't skimp on the evasion, and prepare a safe line of retreat if things go sour. If you haven't branched into other magic schools, Borgnjor's Vile Clutch is a good choice for either an escape tool or a finishing blow.
The following monster can cast the regular, 1-tile version of Agony: