I don't really like how quick you can gain access to the nether in vanilla really quickly with the lava bucket and water technique so I made it so you need a special helmet to survive in the nether to slow the game down a bit. The helmet can be crafted by dropping 2 ender pearls, 1 charcoal, 1 bucket and 1 glass block close to each other on the ground and it will create a gas mask which you wear while in the nether to not get negative potion effects constantly.