Nocturne tower ganks are back

Because Nocturne's big "Character defining" mechanic is that his gank pressure can bypass wards and he doesn't actually have an amazing whole lot going in his favor that other character's can't do better? So instead of making him a ball of stats they pushed one of the things the character can do uniquely instead of just making him HIT HARDER.

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now it's even worse, riot nerfed his lvl 1 ulti in 2011 cause of this they even told us, why would they bring it back?

Because the game is not the same as it was in 2011 and there are more champions with more diverse kits in the game today. Nocturne has been needing some love.