+Spell Hit Chance | 9/21/2005 2:10:37 PM PDT
I've seen a number of threads recently on the boards pertaining to +spell hit chance and I've gathered some information for you which I hope will dispel some of the confusion. Please feel free to post your comments in a reply to this thread.
+1% spell hit chance increases the base chance for a spell to land against a target by 1%
If your target is the same level as you, a spell has a base chance to hit of 96%.
If the target is +1 level compared to you: 95%
+2 levels: 94%
+3 levels: 83% if the target is a mob, 87% if the target is a player.
+4 levels: mob: 72% player: 80%
+5 levels: mob: 61% player: 73%
Etc...
If you wear a +1% spell hit chance item, the above percentages will increase by 1. +2% gives +2.
Etc...
For binary spells only, there is an additional modifier for the resistance of the victim to your particular spell school: fire, frost, shadow, nature, arcane. That modifier is multiplied by your hit chance to get your actual chance to land. This is done with binary spells only, because they never do partial damage.
Example:
Eyonix the Mage (level 60) fires a frost bolt at Yeti of Doom (level 63). Eyonix is also wearing a total of +6% spell hit gear. Yeti of Doom has frost resistance such that he takes 50% from level 60 frost attacks. So, here’s the hit calculation:
0.83 (83% for +3 levels mob) + 0.06 (+6% spell hit) = 0.89
0.89*0.5 (50% damage from frost) = 0.445.
The game will roll a number between 0 and 1, and if it’s less than 0.445, the frost bolt will hit for full damage. Otherwise, a resist message will appear.
2nd Example:
After the resist, Eyonix decides to fire a fireball at Yeti of Doom. Eyonix still has +6% spell hit. Fireball is not a binary spell. Here’s the calculation:
0.83+0.06= 0.89
The game will roll a number between 0 and 1, and if its less than 0.89, the fireball will hit. Otherwise, a resist message will appear. After the fireball lands, the game will then apply spell resistance to determine a partial resist, if any. Assuming the yeti also has 50% fire resistance, on average, 50% of the damage will be resisted.
I hope that illuminates the impact of +spell hit gear on magical combat.
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Friend of Matt the Gnome
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