how about instead of taking 22 armor away from jarvan we do something a little different
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maybe bring back trundle/sejuani breaking his ult walls?
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dont allow him to e+q flash and have the knock up land (kind of how shen does that thing)
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lower his % armor pen (currently something like 26%)
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dont remove all the armor
and if you really really really just have to nerf jarvan before you nerf lee sin or vi we could at least give a compensation buff to his fairly weak shield