Udyr, Maokai, Shyvana, Couple others that I can't quite remember offhand. (Wanna say Riven is one of them) All clear faster then Skarner. Udyr is pretty much a better version of Skarner in a lot of ways pre level 6 when Skarner gets better ganks and in team fights Skarner is pretty badass. But saying he's perfect when Udyr exists says you don't know that much.
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Whatever...