SkillClient is a hacked Client for Minecraft from 1.8 to 1.11.2. You can download and use it completely free.
You can get unlimited Minecraft Accounts for free. Just get yourself a MCLeaks Account ID and enjoy hacking! :)
In the Secondary Creative Inventory of the SkillClient you can find a lot of cool Exploits like ServerCrasher, ClientLagger, Random Fireworks, etc.. Have fun!