Contains:

New mobs:

Flombie
Frost

New types of flesh:

Molten flesh from zombie piglin
Dried flesh from husk
Dissolved flesh from drowned
Frozen flesh from flombie

Fabrics made from respective flesh like:

Frozen fabric
Molten fabric
Rotten fabric
Dried fabric
Dissolved fabric

And special tier fabrics:

The fabric
Cosmic fabric
Divine fabric

Glite time mechanics that limits the time of elytra flight to 30 seconds.

Wings, with also limited glide time ranging from 1 - 16 seconds, that can be crafted with earlier stage of game.

Swords crafted from special "Broken Fragmental" item in New Fleshworking and Tiering Table, most of them have second power on rightclick tested on creepers

Example Swords their hit effects and powers:

Executioner Sword - insta kill - no special power
Excalibur - applying wither effect - small dash forward (no up)
Atena's Sword (Tier 3 Excalibur) - applying wither and poison effects - big dash forward (with up)
Bobby - applying slowness effect - applying poison effect on elemies in range
Kaze - no hit effect - pushing entities in range away from player

Two working stations:

Fleshworking table
Tiering Table

Rightclick entities with flint and steel to light them on fire.

Throw splash water bottle on them to make them wet.

Collect them into elemental bottle by rightclicking them with empty elemental bottle.

Wet Slime -> Water Elemental bottle
Slime -> Slime Elemental Bottle
Wet Creeper -> Plant Elemental Bottle
Blaze -> Fire Elemental Bottle
Magma Cube -> Earth Elemental Bottle
Frost -> Ice Elemental Bottle

Use Elemental Bottles to craft Elemental Imbunesses which can be used to craft some weapons

And more.

EXamp Emerald