4th Gold Generation / Support Item
I had this idea recently while playing in the bot lane
Generally speaking, sustain supports like Nami or Sona tend to bully out the other matchups, because they can negate the damage done by the enemy
I had the thought of introducing a new item that functions similar to the Crystalline Flask 
Passively it could store 2-3 charges and would provide gold p/10, with the amount increasing depending on the number of active charges left (ex. 3 charges, 5gp/10 -- 2 charges, 4gp/10 -- 1 charge, 3gp/10 and 0 charges, 2gp/10 )
it's active would restore Health and Mana over a period of time, adding charges and/or increasing the amount with it's upgrades
however instead of just 'popping' like a consumable, you would target yourself or an ally and it's active effect would happen to whichever ally you targeted
In simple terms, a gold generation item that allows you to use potions on your allies