Explorer's Advent

This is a Minecraft datapack, which aims to make your worlds feel more interesting and alive by building upon the game's exploration aspect, as well as extending the progression. You can expect new entirely unique structures, mobs, loot and equipment.

Currently the datapack includes:

• 3 new structures, including one very large dungeon
• 2 unique mobs with custom AI
• a new weapon
• a new enchanting block
• unique items and materials
• an advancement tree to guide players through new content
• slight tweaks to make exploration more worthwhile and less tedious

For further info check the Wiki