Step 1: This Is the Finished Project
This tower will troll your friends, bad, it can be made from any material but you need sand and 1 valuable block, hope u enjoy!
Step 2: Floor
Make a floor that looks like this.
Step 3: Build 8 Up
Build eight blocks up, don't worry about the roof, that will come later.
Step 4: Place a Torch on the Block
Place a torch on the bait block and put sand on top.
Step 5: Continue
Wherever you can put a torch, place one and then put sand on top, keep on the stacking until you get to the top, then build roof, when your friend breaks the bait block, sand rain!
Step 6: Hope You Guys Enjoyed
Like and comment for more!