Skarner after the patch 6.16
So strong in the areas. Much better in soloing Dragon now. but outside those areas he is so slow (atk speed) it makes his damage horrible which means Gromp and the Krugs. His Q is really weak in turns of damage. In a rank game I was able to dominate those zones where a foolish Xin in ranked dared to challenge me and got stomped in seconds. When it comes to Dragon and Baron fights Skarner will be one of the best champions to fight for them if he isn't kited with Hard cc. (slows won't cut it). Since there is no sand box mode it takes for ever to see what his best Items are.
He very badly needs atk speed out side of those crystal areas. When it comes to grouping I don't see much use for him. The devour allows give you the attack speed but Cindehulk is really great for his W if you go tanky with skarner.

and swapping out
and final item be
if I do swap out Frozen heart so I won't end up going over 40% cdr with my mastery/etc build.
usually getting this for the tenacity also instead of merc treads. unless AP is a huge issue where I need all I can get.