The reason FQC is OP

It's not the multiple passives. It's the fact that it's the cheapest, most efficient route to an acceptable amount of mana regen in the game. No other item gives you 150% mana regen. and it's cheaper than every other final form mana regen item at 2200 gold. Why WOULDN'T you buy this item just to solve your mana issues? And when will riot realize that good mage players will ALWAYS choose the best mana item as their first pick, and that the nerfs to mana items are pointless? Yes, mana is supposed to be a gate for power. But the current alternatives to FQC obviously aren't worth their extra damage or cdr or other bonuses. Mages. Want. Mana. so level the playing field: buff Morello's and grail to 150% as well. Or lower the cost on those two and make FQC 100% mana. Or make them all 125%. But the point is, unless they are all the same, I'm choosing the one that gives me the most mana regen.

And yes, I know about the chalice passive but it's usefulness is better defined later in the game when you have a larger mana pool... and by that time you need it less.

As an example, take , who I've used to jump two tiers. At level 6, he has 9 base mana regen per five seconds.

gives 22.5 total mana regen for 2200 gold gives 18+0 to 10.78 total mana regen, depending on your missing mana, for 2800 gold gives 18 total mana regen for 2550 gold

You can get FQC sooner AND have more mana regen AND have an awesome two person 40% 4 second slow AND have the gp5 (they are nerfing the on hit gold in the next patch). This is literally everything you need to hit spells and get them off in a timely fashion. Not to mention the CDR and the AP. This is why mana regen needs to be NORMALIZED.