A muramana toggle, for it to also deal damage to monsters/minions

I remember when the toggle was removed, as fights would be decided if the person remembered to activate the passive or not, but while it made sense to not work on monsters anymore when it lost its toggle, the item lost some power that way. So adding back a toggle,but just for PvE would be a nice buff to the item in objective taking and waveclear. Might be interesting to add structures too, as it still consumes the mana,so it isn't free damage, and it would be damage not used on champions and such. I think it would add back some skill expresion, and would help the champions that use it, without making them stronger in actual fights, especially who is in a bad spot right now, and has the same problem of taking tower really slow for an adc even with sheen and his AS steroid, similar to before her Q worked on towers.