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→Attributes and Skills
==Spell Damage==
One of the key changes to spell casters in Diablo III is the addition of +% spell damage modifiers. These sorts of modifiers were found on many skills in Diablo 2, and on a few uniques and runewords, but they were uncommon, and not necessary to kill effectively. As a result, casters in Diablo 2 were much less item-dependent than the combat classes, and found it easier to concentrate on [[Magic Find]], resistances, hit points, and other non-damage bonuses.
This will not be the case in Diablo 3, where mages must add considerable +% spell damage from modifiers to stay ahead of the monster hit point curve. A high level Wizard or [[Witch Doctor]] in Diablo 3 will no more be able to kill quickly with no +spell damage than a [[Barbarian]] or [[Monk]] could succeed with a junk weapon. A quote from Flux's post-Blizzcon 2009 Wizard write up explains this in more detail:
::When viewing the listed damage on each spell, it’s important to keep in mind that those are not absolute numbers, in D3. They’re much like weapon damage; modified by your wizard’s attributes, your character level, by other skills, and also by your equipment. Lots of types of items in D3 carry modifiers that boost spell damage, usually by a percentage.
::I found numerous wands, staves, and even pieces of armor with values between +5-25% spell damage, and that was just in the early stages of the game. We know nothing about higher level equipment bonuses, and it’s entirely possible that the D3 team is projecting high level characters to have +100%, +200%, or who knows, +500%, spell damage. If so they’ll be adjusting the base spell damage accordingly, which might make it look very low to our untrained eyes.
::Here’s an example from early in the game, that was mentioned in the [http://www.diii.net/blog/comments/full-witch-doctor-skills/ Witch Doctor skills report]. The skill tree listed damage on my level 2 Skull of Flame spell was 6-9, yet with a level 12 Witch Doctor my Inventory screen showed 19-29 for that spell. I don’t think I had more than +50% spell damage from equipment, so assuming the display values aren’t wrong (in [http://diablo2.diablowiki.net/Lying_Character_Screen D2’s infamous LCS] style), there are considerable bonuses added to damage from character attributes, which are then further boosted by the spell damage bonuses on your equipment.
::This is all part of the D3 team’s plan to make all of the attributes useful to all characters, and to make more types of modifiers useful/essential to spell casters. We don’t know enough yet to judge how well it’s working, but it should be a substantial change from how spell damage was calculated and scaled up (or not) in D2.
