on leftclick with sponge:
	if clicked-block is command block:
		add location of clicked-block to {invis::*}
		send "&bBlock @ %location of clicked-block% will now be invis"
		send "&7Relog for it to update"
		cancel event

on join:
	loop {invis::*}:
		make player see block at {invis::%loop-index%} as air