Broadcaster+
Check out the home page for the full Discord Bot List.
This bot is there to facilitate announcements by sending the message for you. The message is sent by the bot and the true sender remains secret. This is mostly helpful for users who mostly make an announcement on their Discord servers or for a giveaway, for example.
!bhelp or !help = Information for the bot
!broadcast, !announcement etc. = bot will send a message for you