Hi my name is Thommygun, And this is my Skarner The Crystal Vanguard build.
I just purchased him from the store when he was there and i played him for some games and i came to a conclusion, He is a very nicely build champ who can stick on you for a long time but i play him totally different then other Skarner users, they build him Hybrid or Full AD i saw AP too but i was the first one who doesnt see his Q as your main skill, i thought his E was it.
I saw his Q as a nice slow and an assist skill for you E, His Shield is very nice too when you play full AP just because you get alot of extra health with it. His spellvamp is just Amazing with his E And his ult speaks for itself.

I hope you enjoy my build, Its my second one so if you up/downvote please write a comment of whats good or wrong.