[TAS] Boomerang Bosses in 0:21.478
This is a 390-frame (6.508-second) improvement over the method used in the currently published "Maximum Levels" TAS (https://youtu.be/1DJhFhzTk8k?t=935). It also uses 20 less diamonds, which could open up time-saving opportunities in other levels.
I probably won't have the time to do a full-on improvement to the current TAS, but this was interesting enough to upload by itself. To whoever may decide to make a full improvement, feel free to contact me for the input file; if used, some form of credit would always be appreciated.