Build is 61 Elementalist/15 Necromancer/0 Pyromancer. For some reason it keeps putting 3 points in pyro on rift zam...
Not claiming this is the optimum rotation for Elementalist but it works pretty well.
Buffs are Prismatic Armor and Synergize.
Basically you keep up Ignite and spam this macro:
#show Elemental Burst
cast Raging Elements
cast Elemental Forces
cast Elemental Burst
cast Icy Carapace
cast Flame Bolt
cast Crystalline Missiles
In the current beta build Raging Elements is off the GCD so its no big deal to macro it in assuming this goes live. As both your charge consumers are -X charge you can macro them.
Use your CDs at the same time: Rushing Elements, Intensify Elements, and Reclaim Elements.
#show Reclaim Elements
cast Reclaim Elements
cast Fast Summon
cast Summon: Fire Elemental
You can take out the Summon part to avoid resummoning your Fire Elemental too many time.
I hit Reclaim first and do the other two once my pet is back up and on the way to the boss. Make sure you hit Synergize again after resummoning.
You'll have awesome target switching and good single target dps with basically 2 buttons.
It's probably not the best rotation but its simple and it still pulls pretty good numbers.