From Facebook:

FINAL FANTASY BRAVE EXVIUS is having a collaboration with FINAL FANTASY Record Keeper! To celebrate, we're holding the FFBE x FFRK Community Challenge!

To participate, follow the official FFBE and FFRK Twitter/Facebook accounts and retweet/share the designated collaboration post. Sharing the post on Facebook counts the same as one retweet on Twitter.

If the total number of retweets and shares reaches 2,000, amazing in-game rewards will be given out in both FFBE and FFRK!

How to Participate:

1. Follow any of the official Twitter or Facebook accounts of FFBE or FFRK.
2. Retweet/share this collaboration posts.
   * Each player may retweet/share each of the posts on the official accounts (up to 4 total retweets/shares per player).
   * Only retweets/shares of the initial community event post (this post) will be counted.
   * Please note that performing a "retweet with comment" will not count.
   * The steps to participate may be done in any order.

* Rewards in FFBE
・400 Lapis
・10 1 Summon Ticket x2

* Rewards in FFRK
・Mythril x3
・5★ accessory: Lasswell's Insignia (Beyond)
・"Relic Draw x40" Ticket x1

Event Period: 8/18 6:00 PM PDT - 8/24 5:59 PM PDT

FFBE Twitter: https://twitter.com/FFBE_EN
FFBE Facebook: https://www.facebook.com/ffbeen/
FFRK Twitter: https://twitter.com/FFRK_Official