Mages

I'll get right to the point with this one:

Arcane-Use Arcane Blast x3, then arcane Barrage, rinse and repeat.

http://talent.mmo-champion.com/?mage=23000503310033015032310251532103000000000000000000000000000430030010000000000000000000&glyph=011804010608&version=9637

Fire-Fireball, Living Bomb, Pyroblast, and Scorch to apply 5 stacks of Improved Scorch to the target, making sure to cast it every 30 seconds to keep it up.

http://talent.mmo-champion.com/?mage=00000000000000000000000000000003550000123033310531203013510530030013030000000000000000&glyph=161808020608&version=9637

Frost-Nothing but Frostbolts, and Fireball when you get the Brain Freeze effect. Cast Water Elemental and Icy Veins when their up.

http://talent.mmo-champion.com/?mage=23000500310000000000000000000000000000000000000000000000000533030313133100230152231351&glyph=101808010608&version=9637

Enjoy.