Resource pack is designed to change the Ender dragon to the terrifying Boreal from the Lego Ninjago cartoon series. OptiFine is required for stable performance.

Boreal dragon | Ninjago texture screenshots

How to install Boreal dragon | Ninjago

Install Optifine HD (Optional but recommended)
Copy the resource pack to your .minecraft\resourcepacks folder.
Choose your desired resource pack in the game settings