Skarner /// need some advice

So i wonder what is good build for skarner? As recomended from riot build is AD/tank But when i look at LCS build they build full tank only and max mostly E<W<Q. So maybe can help me skarner players what is the best for skarner? i know that build is depends on enemy team and situation BUT what skill is the best to upgrade first, second.. And if i go AD skarner should i max Q first? P.S. sorry for my bad eng. ty. {{champion:72}}
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