Fun game and very clever, I especially like the moving platforms and the blocks toggled by gravity. I do wish the screen wouldn't shake so much, though.
I felt like the green aura was sometimes able to reach places it wasn't intended to, and I recall finishing one of the levels without needing the key as a result, but I don't remember which one. I also couldn't see the bottom row of objects when playing on the itch page, leading to some confusion, but that may be my browser and/or screen resolution's fault (Firefox 55.0.3 in 1024x768).