The UESPWiki – Your source for The Elder Scrolls since 1995
* Calm is basically a crowd controlling effect. Such effects are exceptional for combat in high difficulty games.
* Calm Humanoid is a useful spell when you need to do some unfriendly things to NPCs but don't want to kill them. One such trick is to steal an NPC's armor by casting [[Morrowind:Disintegrate Armor|Disintegrate Armor]] on them until it breaks, casting Calm to make them stop attacking you, then finally pickpocketing the broken armor.
* On normally hostile targets, expect them to re-enter combat once the Calm spell has expired, but if you can raise their disposition, (NPCs only) it may stop their hostility, but only if their [[Morrowind:NPCs#Fight|Fight]] isn't too high by default
(example: for NPCs with a fight stat of 90, you need to raise their disposition to 100. Any lower, and they will attack once calm has worn off).