Chained to Your Friends

Find a Cursed Chain in a Bonus Chest (which can be enabled in the world options) and right-click on another player. You are now bound by the sacred links of the cursed chain. You won’t be able to move without your other half... but why stop at just two player?

No matter how many of you are chained together, you’ll need to face the Ender Dragon and collect its breath to dissolve the chains. Good luck (but you can also die and respawn, but where the fun ?).

If a player is above, the other player can climb any surfaces like the wall is made of ladder.

If you encounter a mob and you don't have that much durability on your weapons, you can TURN AROUND the mob with your friends to deal damage with your chain.