Ender cats and other additions

A mod that focuses mainly on the end, adds new creatures, and is semi vanilla. A new boss to fight, a new dimension to explore, the world.... a bit more... purple. New ores to collect new armor and weapons to craft, and horrible creatures to fight(they're not so bad, its dramatic effect). Use tin and copper to make bronze, lead, and iron to make steel(unrealistic, I know) use diamonds to mine sapphires and sapphires to mine the ores in the new ender biomes(overworld)

Features 

Mobs 

Ender cat civilian (does nothing) drops claws

Ender cat soldier (hostile) drops claws

Ranged ender cat (hostile, shoots spheres) drops spheres

Hovering ender cat (it flys! hostile) drops the hoverer

Sepernt (hostile water mob) drops frozen sepernt tear

Stygian guard (hostile, is found in the stygian dungeon)

Ender Golem (hostile boss mob) Drops key

Ores

Copper (worse than iron)

Tin (worse than iron)

Bronze (equal to iron, made from tin and copper)

Steel (little better than iron, made from iron and lead)

Sapphires ( little better than diamonds)

Angelitic silver ( better than sapphires)

Imperial gold ( better than sapphires)

Celestial bronze ( better than sapphires)

Clawium ( better than all before it, made from diamonds, steel, and claws)

Stygian iron ( better than clawium, you can only make a sword with it, is found in the stygian dungeon.)

Itrium ( the best at this point, is found in the ender cat dimension)

Structures

Ender cat outpost

Ender cat city

Stygian dungeon

Items 

Sepernt tear

Frozen sepernt tear

Claw

Sphere

Hoverer

Key

Overworld key

Enchantments

poisoning

Blocks

End grass

End berry bush

Overworld end stone

Overworld end grass

End wood and all its variants

Sf (secret)

Foods

End berries (dropped from end berry bush)