The mana well, which should be an upgrade, is less powerful than the dripstone. That doesn't make sense at all.
I think the mana well needs a better description. I see what it's doing. It's massively increasing the amount of mana that should be the ceiling, i.e., the 'y' value.
But as I said already, your 'y' value ceiling is broken.
I got an upgrade that suddenly made the mana wells feel worth it.
It definitely needs a better description. Because it feels so broken for a very long time. I'm sure you didn't mean for this to be played with an autoclicker so I'm able to tell that a normal player will feel the game is really broken and abandon it.