Void Balance

Its in beta, so don't expect it to be good for now.

This mod adds:

• Obsidian Sword - Powerful sword crafted with Obsidian Crystals and Nebula Crystals.
• Nebula Crystal/Dust - Rare items found in Ruined End Portals or Ender Forests, can be used to craft the Obsidian Sword
• Ender Forest - A biome in the Overworld (or the Nether) that is based on The End.
• Voidness - An effect that damages you quickly.
  
  

Overall, it makes the game slightly easier for beginners, as you have access to end game items slightly earlier (like in End Cities)