Troll Tower 2.0

Build this base, it is 5 by 5. Make sure to build it out of sand.

Put another layer as shown, the torch in the center does not need to be there(in fact, it works better without the torch :) )

Put a valuable block on the torch (or one above the second base, if you chose not to use the torch) then put a torch on the bait.

Put sand on top of the torch.

Keep putting sand on torches until you get a 3 by 3 area, then build a pyramid like you did for the base, place a torch on top.

Now you are finished! Have fun trolling your friends!