I got the idea this morning i made it in process and it looks like this.
http://www.grimtools.com/calc/JVlwno2O
Just test this with Fabius & Sentinel without problem. Do you guys have any advices to improve this? 
http://imgur.com/5wyq2zQ
Fabius fight:https://youtu.be/fC6BE9CYc90
Your build looks Nice !
Try take tempest, see my grimtools below. (Edit : I see you use Star Pact. Tsunami constellation is okay for Cold-Lightning)
You can ignore the Rhowan’s Crown on my grimtools. since you use Wind Devil for flat RR. Take Owl instead. (If you try to take tempest)
You can also use Trozan’s Ascension Set if you want more on Cold Damage (TSS)
I also make a caster Druid. Using Stormcaller’s Pact instead.
My Druid is focus on Lightning + Crit Damage (+105%), and using Obliteration skill.
Currently I don’t have Light’s Defender Full Set.
Grimtools : http://www.grimtools.com/calc/lNkwYvNJ
Thank for your kind advice But i love storm shard that why i chose to use full set. And maybe today is my lucky cause i just run Port Valbury to test this build and didnt expect that at the end got Decree of Aldritch drop 
Oh you’re so lucky, I don’t have both Light’s Defender Helm and Decree of Aldritch :undecided:
I wouldn’t recommend Light Defender’s druid. Elementalist is so much stronger with that set. If you are going Sky Shard/Wind Devil road, go with Trozan Set and Starfury Emerald. If you want a proper druid, check my signature. If you want a melee druid that can farm Crucible Gladiator, you can make such character too, look for Drizzto’s thread in “Gameplay” section where he posted videos of his gladiator clears.
Yes, I also want to make Ultos Druid but still lack the shoulder. Previously this character is Zar’s Trozan Druid but after long time i want to change this a little for fun but wasnt expect that can do well also Btw after found Decree of Aldritch i saw it kind of support for Aether Druid. Should i change this to that?
Perhaps you need double Decree for full Aether
As caster, 26 storm totem and 22 wind devil with 15 wendigo recks ultimate with lights defender set as druid. You dont need stun jacks
3 spells are enough= wind devil, storm totem and shard frm set.
You can not convert electrocute to aether damage since there is no dot version of aether. So it will do less damage.
Maybe stormcallers pact instead of star pact? You have no cold damage that i can see, so aside from a little frostburn and an electrocute modifier that you will also get from stormcaller, you aren’t getting anything from startpact. Unless you are taking it just for the lightning. The flat damage is nice, but all of those skills, wind devil, totem, skyshard, are really doing the destructon from the DOT. scale back mavens/errocites, and invest in the DOT parts of skyshard and wind devil. The ROI on Skyshard solely for flat lighting is terrible. You have all the points in elemental exchange concentrated in EB but you are doing little to no Burn/Frostburn/Electrocute.
Maybe not think like “I want to do lightning damage”, think rather, “I have these skills and they do x y z damage, what is the best way to maximize all of those.” In this case its lightning cold FB and Electrocute. You have it stacked to the flat lightning. Good if you want to beat the life out of each enemy individually. You will fare far FAR better overall by scaling back the flat lightning a little and spreading a little love to electrocute cold and frostburn.
My reason for Starpact is cooldown reduction. As i said before this is modifier of Zar’s Trozan Druid so i still keeping 40/50 for Shaman. Also Stormcaller pact doesnt have +% of lighting only %crit. I know this still need more improment so im thingking to resign point from TSS to invest more to the others. Thank for your kindly suggestion
Stormpact has 33% chance of % lightning. At max for what you have there that is like a 33% chance of 396%, or on average, around 130%, plus you have a large electrocute modifier but a not so big frostburn modifier, so the electrocute from Stormpact is going to fare much better than the frostburn from Starpact. But if it is more about the cooldown reduction then it is fine i suppose, but I am not sure that 12% of a few seconds alone is worth the points…(then again, percentages are not percentages here…and they are not a direct multipiler either, the numbers almost never work out, i can get close with mana regen, which i think are sums of percentages of the base regen, but never exact.)…but even if it is that is a 1.2 second reduction on a 10 second cooldown…or .6 on a 5 second cool down. Still going to come out on top by balancing out the DOT. And your are welcome. I hope i don’t sound too critical, i am sure some will disagree with my assessment.
Perhaps it should be an Aether Burn available for Aether DoT.
And Chaos Burn for Chaos Damage