Gym Puzzle: You enter to a dimly lit gym. With some mechanisms you can turn on/off and aim red, green and blue lights. As it is a glorified Strength puzzle, you can use Strength to push and pull mirrors to aim those lights to a certain direction.
Switches respond to colors. For example, a yellow switch will only open a path if you aim to it both red and green lights.
About Flash Burn, I was just thinking it like an electric-type version of Scald: A regular electric type with some probability of causing burns.
OST:
https://www.youtube.com/watch?v=Ff9IrPtg_wI 
