What is Rainbow Carpet?
The official description says a free Rainbow Carpet is at the end. It does not publish flight speed or the exact grant animation. Player guides tell you to equip it after the finish and test it on a low section. They describe carpets as a way to cross awkward gaps and turn away from jail drops. Paid carpet variants are not confirmed for this place, so they are not separate items here.
How do you get Rainbow Carpet?
Reach the end of the tower, then check your inventory. If it is missing, make sure you touched the real end rather than a mid-tower prop, rejoin, and look again.
How do you use Rainbow Carpet?
Use it on later climbs to skip risky gaps. It cannot help the run that earns it. Do not buy another carpet until this reward has been checked.