Minecraft Ender dragon

Hello, today I am talking about the Ender dragon. The Ender dragon is Minecraft's 1st boss.(While there is the wither as the second.) This mean dragon has 100 hearts. And if you see these glass blocks with something purple in them, they are Ender crystals. They heal the Ender dragon. They do a lot of damage to you and what you build. It is a good idea to destroy the Ender crystals so the dragon cannot heal. And the..... AAAAARRRGGGHHHH! Curse that Ender dragon! He destroyed my house!