Ctrl + A (Select All)

Update: Allows users to select and retweet with all teamed accounts even with the new TweetDeck update that restricts you to one account per retweet.

How To Use:

1) Click the "Add To Chrome" button at the top right corner of this description
2) Navigate to the TweetDeck website (if previously signed in, refresh the page)
3) Click the retweet button and you'll find a "Retweet All" button at the bottom of accounts
4) Click the "Retweet All" button
5) All done