Make Sightstone recharge wards
on top of getting full wards when you back to shop also cause** one of the main reasons support dont get as much xp as others** is that they need to back in order to get more wards, just an interesting thought
edit 1: to make it not be abused by junglers and top laners you could have it use a charge effect when pair with an ally so you store charges based on how many creeps they last hit
and
exist get them as a jungler or a person who roams from mid or even top the support can also get this item to clear the wards (if you do not hit the ward while its disabled they cant see you)
only for that reason.
?