Dispel

Dispel	Base number of spells that dispel will attempt to remove*	Max. number of spells that dispel will attempt to remove**	Spell Resistance penalty	Base chance of removing AoE
Lesser dispel	1	3	-3 SR for 3 rounds	25%
Dispel	2	4	-5 SR for 5 rounds	50%
Greater dispelling	3	6	-8 SR for 8 rounds	75%
Mordenkainen's disjunction	5	9	-10 SR for 10 rounds	100%

* and ** - number of spells that dispel will attempt to remove can be increased by purchasing bonuses in the fameshop.

Formulas for Dispel Attack roll and Dispel Defence DC calculation

Cast from spellbook:

Dispel attack roll:

caster_lvl + spell_foc_abj (+1) + greater_spell_foc_abj (+2) + epic_spell_foc_abj (+3) + fameshop_upgrades(5 max) + d20 (automatic fail/win for rolling 1 or 20). Max 51 + d20

Dispel defence DC:

14 + caster_lvl + arcane_defence_abjuration(4) + fameshop_bonus(6 max). Max 64

Cast from item (i. e. scrolls and potions):

Dispel attack roll:

5 + character_level/2 + fameshop_upgrades(5 max). Max 30 + d20

Dispel defence DC:

14 + character_level/2  + fameshop_bonus(6 max). Max 40

Note

If a bard has 110 perform, it grants a bonus of +3 to the dispel. This bonus is equal epic_spell_foc_abj.

Formula that calculates the chance of removing AoE

base_chance VS d100

If AoE owner tries to dispel his AoE base_chance = 100%. If NPC tries to dispel AoE he get 30% bonus to base_chance.

Notes

Dispel does not remove spells with negative effects.
If used as an area of effect then dispel will attempt to remove half of the usual number of spells.

Dispel

Formulas for Dispel Attack roll and Dispel Defence DC calculation

Note

Formula that calculates the chance of removing AoE

Notes

Spell Breach spell removing priority

Lesser Spell Breach

Greater Spell Breach