Speaking of Reworder, I'm just leaving this here because I'm not totally sure myself why it does what it does. Minimally, the crates on the right turn the trigger on, and the crates on the left turn the trigger off. If you turn it on, then off, it will be off forever; if you turn it off, then on, it will be on forever; if you die, things go wonky, so this is best restricted to multiplayer levels.

(Normally, if you try to link two words with Reworder and have destruct/etc. events on the same animation in each, they'll go blank. I realized that this is because the first event restricts display to the first frame of the animation, and then the second event tries to read that frame as an animation and fails. So I gave it an animation as a first frame, and this is what happened.)