Just mod that adds structures mobs, bosses and of course more tools and armor.
Update1:
-Obsidian tools and armor
-Obsidian shard
-Obsidian shard tools and armor
-Obsidian shard block
-Obsidian shard block tools and armor
-Reinforced Deepslate crafting recipe
-Bedrock crafting recipe
-Smelting crying obdisian to obsidian
(takes much time but gives much xp)
-Bedrock tools and armor
(but sadly cant mine the Bedrock)
-Obsidian Guy
-1 new structure

