Appears to be a promotional module available through several means, based on: <a href="http://dndadventurersleague.org/mordenkainens-tome" rel="nofollow">http://dndadventurersleague.org/mordenkainens-tome</a>... and <a href="https://www.dndbeyond.com/posts/222-rrakkma-is-an-" rel="nofollow">https://www.dndbeyond.com/posts/222-rrakkma-is-an-</a>...