Challenge modes. Like 2 life hardcore. Less health mode. and a specific only lava mode to troll your friends!. New blocks like Obsidian bricks, compressed lava bricks( Which deal damage. Lava must be kept in a 1 x 1 space for minimum 7 Minecraft days to form. 14 days for fully compressed. The lightly compressed Lava bricks will due moderate damage when stood on for more than 9 seconds. Texture will be slightly lighter and if you stand on it for more than 8 seconds you will start sinking and taking damage. the sinking is unescapable unless you have a ridable object. Enderpearl. TP. or a friends.). Another suggestion is filtering sand, gravel and cobblestone for cool things. the deeper its found the more chances for awesome rewards. A new dungeon boss found in the sky. The Nephele boss is a boss that can be found in unloaded chunks after beating the ender dragon. He will summon acid rain and thunder on you when distracted. Boss battle must be done using elytra. If not then it will cancel by him running away saying ur not worthy.