I would look at a click castsequence.
They are in the wiki.
Bigfish made the thread, which explains them; it is always on the top 2 pages of the macro forum.

Prioritize: Flame Shock > Lava Burst > Chain Lighting > Lightning Bolt

Adjust the commas for your spam speed.


I would glyph for Lava Burst, Totem of Wrath and Lightning Bolt.
Drop the ToW on every shaman, every 5 mins or so.
Then, drop whatever totem set you'd normally use for your DPS.
The normal set should include 1x ToW + 3x other Fire Totems.
Probably also 1x Wrath of Air for caster haste + 3x Grounding (unless you want something else).
And 1x Mana, 3x Other water totems.
Earth doesn't impact spell casting dps, but I like staggered Tremors, as a precaution against fear.

I generally gear, prioritizing spell power over everything else.
Crit and Haste are both nice.
Hit is quite important, until you're hit capped then its useless.

Be sure to Water Shield frequently, and to keep up your Flametongue Weapon buff.
Bloodlust/Heroism on bosses or in arena.