Remember the reason you removed Banner of command, because you just didn't know what to do with it since it was either useless or overpowered ?
How about you remove 
from the game ? Completely removing this item. The only story it had was either being completely broken (it is atm) or totally forgotten.
Honestly that's the best thing you could do to this item.
The major issue with Banner was that it was op on high elo/pro play and ignored on low elo because we were not good enough to properly use a item that was fucking broken in fact.
That has nothing to do with Guinsoo case.
They don't need to remove it just get rid of phantom hits all together and the game is so much easier to balance. This is like the 3rd or 4th failed attempt at introducing phantom hits to the game.
