Liandry's is really good with that permaslow on Q
But they're changing Skarner really soon so this will be rather irrelevant.

Okay, I've tried Skarner AP a few times, and each time, except for one against Swain, I was just fed. Farming is easy from level 4 (when you have Q, W and E level 2) and sometimes, if you know the jungler is coming, you can just go after him and kill him (it happened to me twice). If you know how to get kills on bot and top lanes, it will help a lot.
In Team Fights, if the enemy doesn't understand you're not the AD/Off-tank anymore, they won't focus you and ignore your damages (which, with your E and Q, are huge) and they'll die before they understand.
Also, I fought against a Darius (yes, this OP Sh!t) who had 15 kills in 20 minutes, and on 1v1 he didn't stand a chance. The funnier is, when you go 1v1 with a carry, they'll try to kill you first, then to run because of their health loss, but one does not simply run away from Skarner !
Try to fight when enemy minions are around, too. The regen given by your E is a great advantage.

Really good idea. The E provides a good harass and sustain, and the Q does some great damages late game. Maybe, instead of WotA, try a Nashor Tooth, the CDR and AS are interesting for Skarner's passive, and his ult comes back in a few seconds when you're farming.
I only tried against bots for now, but I'll try this in PvP so I can figure out wether it's viable or not, but really I think it is, and it's really original. It reminds me of Cho'Gath AP mid, somehow.

This build is amazing, it really is. Would add that late game selling your dorans ring for a phantom dancer is a great idea!

Dude, your build is amazing. Avesome skarner in ap is like op at late game.
Every item is perfect for skarner. 10 from 10 for you.

Great build but couldve been better but this is your first build so i give you a +1 so more other users can see this.

Awesome guide +1