Where did idea for garen's spin on his E came from?

I have many of games played during my life and in game called "The Witcher 2 assassins of kings" which is one of my <3 i noticed that in this game heavy armored units who wield two handed sword like armored knights have one attack where they're just spinning in same way {{champion:86}} oing on his E.I don't think that it idea came from this game since LOL is two years older game but i think that in Witcher 2 they took this idea from LOL to put in.
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