Rankings are based on the following priorities:

1) Searing Totem
2) Flame Shock dot is kept up
3) Lava Burst
4) Earth Shock with 6 or greater charges of Lightning Shield
5) Lightning Bolt

Cooldown Priority

1) Elemental Mastery used as often as possible
2) Unleash Elements

Flametongue Weapon imbued
Lightning Shield is kept up

Stat Importance

Hit (to 17% via Hit or Spirit) > Intellect > Mastery > Haste > Crit

Reforging

1) Reforge your weakest stats until you've reached 17% chance to hit (via Hit or Spirit)
2) Reforge Haste and Crit to maximize Mastery