Similar to another thread, this one works a bit differently. First, go builder and get a mine plus some wood and 10 stone. Next, begin building like so: Find a pine tree that looks like this. Place backwall, preferably stone, straight up the trunk of the tree so you can't see it. Go about 2 blocks up into the tree. Place a stone block (I used a trap block in that image because I'm stupid, oops) where indicated on the tree. It should attach to the backwall hidden by the trunk. Grab your mine, put it on top of the block. If you're lucky, it should be completely hidden or almost completely hidden. Now go archer. Stand on your block of stone and fire at enemies that approach. When they get close, climb to the top of the tree and hop around frantically like you're scared. The enemy will jump up and grab onto the stone block, exploding because of the hidden mine. If you're high enough or jump away right as they climb up, you probably won't die due to the explosion either! This is is pretty similar to the thread mentioned above, but the difference lies in deliberately trolling the enemy. It's pretty funny to watch them climb up and die and then unleash their rage a few seconds later.