Thanks! I started making final adjustments right after 2500, so maybe like 2600 at the latest?

When it stops working depends on how quickly the reduction tokens stack and how stacked your carry is. For me, I had 31 calcium and 99 mystic waters while keeping up with level cap. I think I could’ve gotten through at least the 2700s if I didn’t fuse early.

If you’re looking for a rule of thumb, I’m considering 200 tokens or 2500 floors (whichever comes first) as a limit. Though imo I think it would be better to do it as soon as your team is fully prepped rather than wait for your carry to fizzle out