1. Create a new world in creative mode.
2. Switch to peaceful.
3. Go in spectator mode. /gamemode 3
4. Find a skeleton dungeon.
5. Go in creative mode when you go in it.
6. (optional) Remove the chests.
7. Put torches up and make sure there's no light level of 7 or less.
8. Go in Hard.
9. (optional) keep adding 24000 to the time until the difficulty is 3.75
10. A bunch of skeletons will spawn 1/2 in ground (feet in ground). This broke my LP's 3 dungeon farms! |:-|