Hello! I have seem to have found an Easter egg in my Vanilla server with the /help command. To my knowledge, this haven't been discovered yet. It seems Searge wanted a message to new players. :) I found this 8/26/17

Twitter has the answers!
http://imgur.com/a/8GcmI

Trigger Warning!
http://imgur.com/a/RCPd0

Testfor
http://imgur.com/a/2mObz

Full of Stats!
http://imgur.com/a/ytuS1

I've turned it on and off.
http://imgur.com/a/OY3PR

/kill
http://imgur.com/a/kKPF0

/deop
http://imgur.com/a/U0cys

How did I achieve this? I used /help in a command block on a vanilla server. Try it out for yourself!
I think this only works on a server, because of the /deop one. But I'll let you find out for yourself!
If there is any issues, (This is my first post!) please let me know. Thanks!
-agentAMP