Oblivion:Calm

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	Calm
School		Illusion
Type		Offensive (Non-hostile, No enchanting)
Effect ID		CALM
Base Cost		0.47
Barter Factor		0
Availability (Click on any item for details)
Spells Scrolls Staves

Calm up to level L for D seconds

Causes the target to stop moving and prevents them from performing any actions. They will still be aware of your presence. Attacking the target will dispel the effect. Calm is known to work on creatures, humanoids, daedra, dremora, and undead.

For calculating magicka costs of this spell, the level needs to be converted into a magnitude, see Magnitude to Level Conversion. One implication is that the enemy levels affected by any Calm spell will be less than the quoted values if your Spell Effectiveness is less than 100%.

[edit] Tips

Calm is perfect if you're trying to fight ranged in tight corners. Tag the enemy, and slide out to get some distance.
Calm is basically a crowd controlling effect. Such effects are exceptional for combat in high difficulty games.