According to OP.GG after the nerf amumu is not a viable jungler. Whats your opinion on Riot nerfing Amumu? : r/amumumains, illaoi op gg - thirstymag.com
Amumu URF Build, Runes, Items, Skills (Patch 14.04) - OP.GG - League of Legends
Amumu, the Sad Mummy - League of Legends
Pro Amumu jungle path, S14 jg routes, clearing guide and build » Jungler.GG