Originally Posted by Lordofluxuary
i will not discredit your claim but it is only a difference of opinion and also if you don't try why give up, because you have no way of knowing if something can be balanced or priced correctly.
For those who think that item would "break" the game to rush this with nothing else does tend to leave you open for a lot of problems if it ever happened. also its no like there are champions who don't use mana as a resource right? sorry if you find my sarcasm rude. but there are always problems it seems.
For reference, something like mana-sustain was attempted.....The very opposite effect mana burn.
It was always binary because many champions could not afford the mana cost, and some other champions would die before they ran out of mana.
Attack-based and ability-based mana adjustments are very binary because of the large discrepencies in mana costs and optimal builds. It cannot be balanced and worth using for more than a tiny minority of the champion base at any given time, and it is not worth the effort to change every champion so that they can be balanced with such mechanics.
If a mechanic cannot be balanced and worth using for more than a very small selection of any category of champions or it requires excessively altering other mechanics to make it work, the mechanic in question should not exist on an item. That doesn't mean that you cannot balance it within a single champion kit, as there are a lot of mechanics that are balanced within champion kits and would be broken if they were available on items.