Spell Damage

Note: These formulas may be slightly out of date. Last tested: 3/31/2013.

The spell damage formula is as follows:

Spell Damage = max(1, (damage_range * spell_data * magic_dmg * critmod *  aoe_mod * channel_mod) * defense_mit)

Factor	Description	Formula
damage_range	The variable range of the spell's damage	0.8-1.2 on average
spell_data	Damage factor from the spell	(See below)
crit_mod	Bonus for critical hits	1.5x (1x otherwise)
aoe_mod	Bonus for the primary target of an AoE	2x (1x otherwise)
channel_mod	Bonus if Channeling is active	1.5x (1x otherwise)
defense_mit	Mitigation for the element and attack type in question	Varies

Spell	spell_data
Magic Missile	1.065
Elemental T1	1.14
Elemental T1 AoE	0.912
Elemental T2	1.82
Elemental T2 AoE	1.368
Elemental T3	2.28
Elemental T3 AoE	1.824
Soul T2.5	1.82
Soul T2.5 AoE	1.368
Soul T3.5	2.28
Soul T3.5 AoE	1.824
Soul T3.5 Burst	5.472
Dark T3	2.28
Dark T3 AoE	1.824
Dark T4	2.71
Dark T4 AoE	2.168
Holy T2	1.82
Holy T2 AoE	1.368
Holy T3	2.28
Holy T3 AoE	1.824
Explosion (note1)	1.425

magic_dmg is calculated separately as:

magic_dmg = (base_bonus) * (1 + elem_bonus) * (1 + prof_bonus) * (1 + boost_bonus) * (1 + hath_bonus)

Factor	Description	Formula
base_bonus	Magic attack base damage	MDB
elem_bonus	Element damage bonus	EDB / 100
prof_bonus	Magic proficiency	Prof / 200
boost_bonus	For every Ability Point put into an AoE spell past the first	+6.25%
hath_bonus	The "Dæmon Duality" group of Hath Perks	+5 to 30%

• (Note 1) Damage range for Explosions is 0.5-1.5 instead of 0.8-1.2, and they can not crit

See also

• Spells