Well... if you have noble, then you can use player action -> display block. Though one problem is, is that when a player right clicks the block it disappears. To fix that you can make a ghast ride you, so that you can't right click anything.
Well... if you have noble, then you can use player action -> display block. Though one problem is, is that when a player right clicks the block it disappears. To fix that you can make a ghast ride you, so that you can't right click anything.