Crushing Prison (Origins)

For the spell in Dragon Age II, see Crushing Prison (Dragon Age II).

Crushing Prison is a mage spell from the Spirit tree in Dragon Age: Origins.

Information

Deals (100 + spellpower) * (duration / 9) * 1.25) spirit damage over the duration of 9 * target rank duration modifier seconds.
Spell combinations: Shockwave, Shattering.
The target is immobilized, unless it is a Boss or Elite Boss.
Range: 25m.
Conjuration time: 1s.
In addition to damage-based Threat, 100 Threat is drawn.

Activation base is in mana and values vary with fatigue%.
Arcane Warrior spellcasting: the spell can be cast with your weapon(s) drawn.
Line of sight is not required.
Most enemy spell casters have a rank of Lieutenant or less. Crushing Prison will disable them for its duration.
The spell is not very effective against bosses, as they are not immobilized and damage is scaled down with the very low duration. One notable exception is when tanking with an Arcane Warrior, where the immediate extra threat is handy to draw the boss to the tank.
Unlike Force Field, enemies in Crushing Prison will continue to take damage. This spell can be very effective if combined with Area of Effect spells such as Inferno.
It is possible to target friendlies with crushing prison however this is likely an intended mechanic to trigger Shockwave around friendly targets when combining it with Force Field.