FROSTfire / Elementalist

this is by far my favorite raiding build because it does not consist of 1 button spamming.
Your 3 main spells will be frostfirebolt , ice lance and fireball. You spam frostfire bolt, and when fireball procs you use it, and if ever fingers of frost procs you do a shatter combo ( frostfirebolt icelance , witch usually ends up doing double crit for and easy sum of 10k dmg together)

this build is also very raid friendly, your elemental is a mana totem for others and as well your winters chill debuff adds 10% crit all together for all casters

(works rly well for raiding, i recommend having molten armor for extra crit, to get more ignite off. )
with clearcasting comes peace of mind of your mana pool for loooong fights,

gear choices: spell power/crit/haste (1,2,3) order of witch to get things

IMPORTANT : this build has a lot of procs that happen, there is a mod called POWER AURA's (it is outdate but still works flawlessly!!), I HIGHLY RECOMMEND IT, it allows you do create like special animations and sounds for whens buff procs like fingers of frost, or free fireball or clearcasting.. IT makes it alot easier then having to stare at your buff bar to see those special proc buffs ( since blizz is cheap and dosent create some for us)