1) Press the green flag 2) Wait for the list 3) Once the list is there copy the command 4) Go on Minecraft and type in chat "/give @p minecraft:command_block (You must have cheats on for this step to work) 5) Place the command block 6) Click the command block (IMPORTANT:You MUST be in creative for this part to work ) 7) Press Ctrl + v 8) Press Done 9) Take out any power source and use it to active the command block (or in 1.9 you can press needs redstone while in the command block to switch it to always active) 10) Type in chat /gamemode @p 2 (or) /gamemode @p 0 11) Good luck Defeating this new and improved Wither (you'll need it(it as in the luck))
Thanks to thewcoop on youtube for the song!