Cambria The Lost Worlds does this on Map 24 Screen 7A without scripts. Will need to look at the combos and secret combos to see how I set it up. (There's a combo on the ground that uses the cycling). Use "amongus" to access the file.
It uses cycling garbage that I came up with. I show it in this video: https://www.youtube....h?v=0tDrrMPhftY
Pretty much you abuse that you only trigger the flags that are on screen that frame, so you make the secret flag and combo trigger all be lined up at the same time. You also will need a ground tile that will cycle to only be triggered into and auto side warp if you triggered the wrong combo.
To see how it looks go to Favorite Commands->Preview Mode then press C to see what the combos are doing. Make sure to have flags turned on with f.
This cycle trick can be super useful elsewhere too!