Talk:Skarner/@comment-25602484-20141031020626/@comment-35229418-20141101194022

What's the utility for? You already have high MS and mana regen isn't needed with Spirit Stone. Cooldown reduced on summoner spells is good, but it's only really useful for Flash->ult and, with the latest changes, you'll want to stack your passive before ulting. I don't think it's worth 7 mastery points altogether, I suggest you to try 9/21/0. (Also, don't take the Runic Shield. It's only useful if you die a lot, which is never a good thing...)

Runes are perfect.

About the build, it looks solid altogether. The problem is that you waste money for Zephyr's Tenacity because you already have it on Treads, but you'd lack MR if you remove them. So, what to do... you could just take out Treads for other boots if you don't desperately need the early tenacity (you have 15% from the masteries anyway), or replace Zephyr with something else if you don't really need the movespeed (you have the runes) - The Black Cleaver, Wit's End, maybe even BotRK are good alternatives.

Also, about the build order, try to take Gauntlet before Randuin, Skarner is the best Sheen user in the game. If you do remove Mercs, you may want to take Banshee's a little sooner. And I suggest buying your Tier 2 boots right after you complete SotEL, they help a lot.

Altogether, I like it. By the way, don't blindly follow everything I tell you, maybe try my advices and if you don't feel they work for you, it's fine.