This mod adds: New structures, New Biomes, A New Dimension, New Weapons and tools, New Mobs, and new minerals.
New structures: Adds 3 new structures, 2 related to the sculk manifesting on the surface, with good loot but with certain challenges. The third structure is more of the mod's lore, which will not be relevant until the full versions of the mod.
The only new biomes appear in the new dimension and are based on the sculk.
New Dimension: This dimension is based on the ancient city portal, but has not yet been adjusted to the dimensions of this portal.
The new weapons and tools are those added by the ruby that was added for the new dimension, as well as the platinum inspired by the original ancient debris.
New Mobs:
These are normal ghosts, and electric ones. The ghost spawns naturally in the new dimension in groups of 8, and when they die they shoot lightning bolts at all their nearby entities. Electric ghosts are only generated when a normal ghost is struck by lightning, and it is practically an improved version of the ghost.