15: Earthen Rage = Lazy man increase to DPS
30: Wind Rush could be good but probably need to test it more
45: Voodoo Totem isn't as good as i first imagined, think of it more like an AOE silence rather than a full duration CC
60: Echo feels smooth, but not sure if it is worth 10% haste for 1 more charge of lava burst
75: Primal ele is more pve DPS but need to do more testing, but i am loving Icyfury
90: Storm Ele is good, but not sure if it is worth replacing Ele Mastery and you also lose your fire ele in its place, but does generate a nice amount of Maelstrom.
100: Lightning rod could be viable with Artifact weapon build, but lightning bolt just doesn't hit for enough at the moment.