Legendary

Waystones
When placed, Waystones will be prompted with a name, which must be unique from other waystones. Then, prompting another waystone's name will teleport the user to that waystone. For every thousand blocks between two waystones, 1 XP level is needed.

Allay Chests
Allay Chests act as a shared inventory chest for each unique dimension. If an Allay Chest is named, it will open a unique inventory that can be accessed by other chests of the same name.

Towers
Tower Cores can be found in Mineshaft chests. Blast Towers summon lightning on mobs nearby. Stun Towers knock all mobs away and deal damage. Frost Towers freeze nearby mobs.

Lava Coils
When powered, Lava Coils make all blocks in a 4-block radius unbreakable. The radius can be extended up to 12 blocks based on how many lava coils are connected.

Boost Plants
Boost plants increase movement of mobs colliding. Speed Wheat increases speed, Bouncecaps jump height.

Prismarine
When forged with an Enchanted item, a random enchantment on the item will be upgraded by 1 level. Prismarine Books can be forged with an Enchanted item to transfer all enchantments to the book, using up the item in the process.

Pacification
Basic mobs can now be pacified with certain items. Zombies with Putrid Pollen, Creepers with Sulphur Crystals, Skeletons with Tipped Arrows, and Illagers with Prismarine.

Artifacts
The Unbreaking Cage can trap up to 4 mobs. The Banner of Courage will bring tamed, passive, and team mobs to your aid, directing to position or attack. The Lute plays notes based on looking direction.

Mounts
The Big Beak can jump in the air and glide distances, tamed with Melons. The Regal Tiger can pounce on mobs, tamed with Raw Meat. The Fearless Frog can double jump, tamed with Spider Eyes. The Brilliant Beetle can glide even longer distances, tamed with Nether Wart.

Golems
Stone Golems can be built with Cobblestone as melee. Plank Golems can be built with Logs and given certain ammo to change their projectile. Grindstone Golems can be built with Smooth Stone on top of Prismarine, being able to roll into targets. Mossy Golems can be built with Moss on top of Smooth Stone, being able to heal teammates.

Piglins
Portal Guards throw TNT at enemies and deal heavy knockback. Sporebacks throw explosive Blast Fungus, while Seekers act like Nether Creepers. Pygmadillos roll into enemies, like an evil Grindstone Golem.

And more!