One of the best Addons for Thaumcraft that adds lens effects (night vision, scanning the blocks, finding mobs), will allow you to create potions by mixing the essence with his blood, and there will be a system for catching, breeding and enchanting creatures.
How to install Thaumic Horizons
- Download and install Minecraft Forge
- Download and install Thaumcraft
- Download mod
- Do not unzip it, copy to C:\Users\User_Name\AppData\Roaming\.minecraft\mods