Minecraft wiki entry for Best_biomes_to_play, associated text: Basalt deltas are the #1 most dangerous biome in the Nether, as magma cubes are everywhere, lava pits are under you, and there are a lot of high cliffs. Bringing fire-resistance potions is recommended in case you fall in lava and the lava burns you up. If you want to go here, bring at least full iron armor, weapons, tools, and a bow and at least a stack of arrows to get rid of the magma cubes without them knocking you off into the lava. Cheap blocks such as netherrack and cobblestone can be used to assist movement, such as bridging around or pillaring up.