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Spellpower is the mage's critical secondary attribute, and is equal to 10 less than the caster's magic attribute (with a minimum of zero). It affects the effectiveness of all spells and shapeshifting forms of the mage. Spellpower is not calculated for rogues or warriors (with some exceptions), but their skills use a similar system, e.g. many rogue abilities are affected by cunning-10.
Mages benefit from spellpower directly and indirectly: spellpower increases the magnitude and duration of spells and also helps overcome the mental or physical resistance of those affected. As a rule of thumb, most spells increase impact by about three to six points for every ten points of spellpower, although some follow a different formula. There are also a few spells unaffected by it.
Staff Damage Edit
- See also: Staves (Origins)
Staff damage is directly influenced by spellpower:
Damage = BaseDamage + Spellpower * 0.22 * StaffFocusAdjustment * DamageBonus
- 1.0 without Staff Focus
- 1.33 with Staff Focus
- Fire: 1.2
- Ice: 1.15
- Electricity: 1.1
- Nature: 1.15
- Physical: 1.0
Common Formulas Edit
|Type||Description||Example formula||Power = 10||Power = 50||Notes|
|Proportional|| Impact grows directly with spellpower;|
double power has double impact
| Flaming Weapons:|
Fire Damage = 0.13*[Spellpower]
(up to a maximum of 10)
| 1.3 =|
| 6.5 =|
|Some spells also have a minimum and/or maximum.|
|Linear|| Each point has same incremental effect;|
double power equals double impact
| Arcane Bolt:|
Spirit Damage = 30 + 0.3*[Spellpower]
| 33 =|
30 + 0.3*10
| 45 =|
30 + 0.3*50
|This is the most common formula type.|
|Fixed power|| Impact remains the same;|
spellpower has no direct effect
|Petrify lasts 20s||Duration: 20s||Duration: 20s|
- Formulas only determine a spell's raw potential; they do not take into account mitigating factors on the target or enhancing factors on the caster.
- Mitigating factors include: damage types, resistances, magical shields, game difficulty, relative ranks.
- Enhancing factors include caster level and spellpower's ability to overcome resistances.
- Although the formula values will appear rounded on the character screen the game engine does not round these values in its calculations.
Resistance Checks Edit
- Mental and Physical Resistance Checks are of the form:
SuccessProbability = 100 - Max(Resistance - SpellPower, 0)
- If spellpower is higher than resistance, the check will always be successful.
- Monsters have an adjustment to their base resistance based on rank and difficulty setting (up to 30 for a Boss).
Boosting Spellpower Edit
Spellpower can also be enhanced above its base through the use of spells or wearing items.
Skill/Spell Boosts Edit
- Spell boosts: two spells increase power by a fixed amount which itself is based on spellpower. They can stack with each other and the spellpower gained from one will further boost the second:
- Ability boosts: Arcane Mastery adds 5 to spellpower; the same impact as increasing the magic attribute by 5
- Shale aura boost: with Stone Aura tree maxed out, the aura grants a bonus of +10 to spellpower.
- Plot spell boost: Vessel of the Spirit, plot spell exclusive to Wynne, grants +(20+(caster's level*2)) spellpower bonus in its Aneirin's Token-enhanced form.
Mage with spellpower=100 casting Heal
- Base healing: 80 = (100 + 100) *0.4
- Add Spell Wisp: 84 = (100 + 100 + 10) *0.4, ← Wisp adds 10 = 5 + 100 *0.05
- Add Spell Might: 88 = (100 + 100 + 20) *0.4, ← Might adds 20 = 10 + 100 *0.1
- Add both: 92.4 = (100 + 100 + 31) *0.4 ← Spell Might adds 21 = 10 + (100+10) *0.1 ← Wisp adds 10 = 5 + 100 *0.05