Stat Priorities
Stat Ranking
Intellect > Haste = Crit = Mastery > Versatility
Main stat is king for stats so as a general rule highest item level will be your best option for gearing; however once you are reaching the point where you have equal item level pieces you want a good mix of every stat other than versatility. Simming your character will always give you the best results when it comes to stat weights and which items you should equip on your character.
Stat Outline
Haste - Increased spell casting speed
Mastery - Your spells deal 8% additional damage, up to X%
Crit - Chance for your spells to deal bonus damage
Versatility - Increases damage and reduces damage taken
Races
For Alliance the best races are Dwarf followed by Mechagnome and Human.
For Horde the best races are Tauren followed by Mag’har Orc and regular Orc.
That being said, all races are extremely close in performance and not a detail that should be worried about too much.
Enchants
Cloak: Enchant Cloak - Chant Of Leeching Fangs
Chest: Enchant Chest - Crystalline Radiance
Bracers: Enchant Bracer - Chant Of Armored Avoidance
Boots: Enchant Boots - Defender's March
Legs: Sunset Spellthread
Rings: Enchant Ring - Radiant Haste or Enchant Ring - Radiant Critical Strike
Weapon: Enchant Weapon - Authority Of The Depths or Enchant Weapon - Authority Of Radiant Power
Gems
Sim your character to determine optimal gem setup, there are far too many combinations of gems to list and the optimal gems will be based on your character’s existing stat breakdown.
Consumables
Food: Feast Of The Divine Day or Beledar's Bounty
Phials: Flask Of Alchemical Chaos
Potions: Tempered Potion
Health Potions: Invigorating Healing Potion
Weapon Oil: Algari Mana Oil
Runes: Crystallized Augment Rune