Another thought: can we get it so that tear, etc don't charge up in the pregame? Having Karthus or Urgot get 100 mana, while other champions who have targeted conditions or other effects feels really awful, especially since it feels that there is an incredible imperative to buy the item within seconds of the game opening, which is a pain, and too rushed.

wait. Manamune upgrades too? What does it turn into?

With Singed I was able to get a Seraph Embrace and ~200+ bonus mana on a second tear in 17 minutes.

Honestly, if you are going to do something like that it would be better if you just disabled it and came out with a similar Dominion version. (like odins veil is to banshee's)

If lowering the effect timer in general should be taken into account of, i believe RoA needs looking at

And a few other items such as how Rengar's necklace snowballs

The upgrades are ridiculously strong, I don't mind if they are only reached one out of 10 games. Champs like Blitz, Singed, Ryze and Kassadin will have these items every game, are already top tier and don't need to be consistently stronger.

I'd think a cap of 500-650 would be ideal for your average game.

I think the numbers on the final items might be strong enough to warrant them only converting at the end game. I mean, you have to consider the bruisers who go LW+FH already, if they have Muramasa earlier on it could lead to easy snowballing on champions like Blitz and Kha'Zix.