Gaming
 

Dispel Magic

From NWN2Wiki

Dispel Magic
Spell Information
Spell level : Innate level: 3, Bard: 3, Cleric: 3, Druid: 4, Paladin: 3, Sorcerer/Wizard: 3
School : Abjuration
Components : Verbal and Somatic
Range : Medium
Target/Area : Single or Colossal
Duration : Instantaneous
Save : None




[edit] Description

Dispel Magic attempts to strip all the magical effects on the target. If used on an area then it attempts to remove the most powerful spell of each creature. The dispel check is 1d20 + 1 per caster level (to a maximum of +10) versus 11 + spell effect's caster level.

[edit] Dispel Magic workings

This applies to any spell which has a dispel magic check. Dispels are indiscriminate and affect anything in the target area, or on the target creature.

[edit] For any kind of dispel

In NWN2, a caster can dispel a summoned monster by targeting the caster. Targeting the summoned monster will have no result.

Feat abilities, as well as extraordinary and supernatural effects, cannot be removed by dispel magic.

It is unknown if a caster's own spells, like the 3.5E description say, are automatically/chosen to be dispelled when affecting an area, but likely are not.

[edit] Targeted dispel

Once an object or creature is the target of the dispel magic spell the caster makes a dispel check (1d20 + caster level, maximum +10) against each spell currently in effect. The DC for this dispel check is 11 + the spell’s caster level. If the check succeeds, that spell is dispelled; if it fails, that spell remains in effect.

[edit] Area dispel

For each creature within the area that is the effect of one or more spells, the caster makes a dispel check against the spell with the highest caster level. If that check fails, the caster makes dispel checks against progressively weaker spells until one is dispelled (which discharges the dispel magic spell so far as that target is concerned) or until all the checks are failed.

For each ongoing area or effect spell whose point of origin is within the area of the dispel magic spell, the caster can make a dispel check to dispel the spell.

[edit] Raw numbers

The formula used is very simple:

Caster roll: 1d20 + Caster level (capped appropriate to each spell)
Dispel DC: 11 + Caster level of effect

The roll needs to be equal or greater then the DC to dispel that spell.

There are no additional ways, via feats or spells, to influence these numbers (The game actually has the function hardcoded regardless). The checks are balanced roughly for a 50/50 chance of dispelling the effects of a similar level caster, a level 10 caster requires a roll of 11 or more on the d20 to affect a similar level 10 casters spells (a 50% chance), with the check being harder and harder as levels increase - noting below the level limits, where there is either 100% or 0% chance of success.

There is also no way to score a critical and a 1 doesn't always incur failure - a level 20 caster (minimum roll: 21) can dispel anything cast by a level 10 caster (caster level 10 + 11 = DC21). Similarly, a level 10 caster (using the spell Dispel Magic, so can have the maximum +10 caster level bonus on the roll, so maximum roll is 30) cannot dispel anything cast by a level 20 caster (caster level 20 + 11 = DC31).

This means that certain dispel spells cannot ever affect certain caster levels. These are the limits of certain spells:


Caster level limits for dispelling spells (Assuming a level 20 caster using them)
Spell Maximum caster level
addition to roll
Maximum enemy caster
level to affect
Maximum enemy caster level
for automatic success
Lesser Dispel Magic 5 14 None (But a 70% chance of dispelling level 1 casters)
Dispel Magic 10 19 None (But a 95% chance of dispelling level 1 casters)
Greater Dispel Magic 15 24 5
Mordenkainen's Disjunction Unlimited Unlimited Dispel caster level - 10.
Thus with a level 20 caster, 10.

[edit] Bug Notes

In NWN2, the caster can only dispel a summoned monster by targeting the caster. Trying to dispel the actual summoned monster has no effect, although really the summoner should have no effect applied to them, and the monster itself should be subject to the dispel magic check (Essentially, the EffectSummonMonster spell applies an invisible EFFECT_SUMMON_MONSTER effect on the summoner, perhaps linking it to the summoner's summoned monster for things like tracking masters).

There is also no way to alter the caster level of applied effects, meaning this system is hardcoded into the game. It is unknown exactly how it works regarding two spells with exactly the same caster level, or how spells which apply multiple effects, or two separate effects at once are affected.

Under patch 1.06 in NWN2, targetted Dispel can only be performed upon friendly targets. Enemies cannot be targetted for Dispel Magic. Only area Dispelling is available.

[edit] External resources