How does the execute testblock command work? Can it check across a large area? Such as in my example image above, would I be able to have one command block that checks and changes all layers=2 into layers=1?
What I'm trying to do is create a melting effect. I'm making a "the ground is lava" thing. Over time, the amount of layers of snow will decrease until the player is touching the green terracotta, upon which they will be killed. The reason I'm wanting to decrease layers in this weird way is so that players enter a normal looking room, but their available moving space will decrease as the snow melts.
