Special Heroes: Greil's Devoted Preview Video (Notification)
Special Heroes: Greil's Devoted Preview Video
Also, in the next Tempest Trials+ event, you can earn Special Hero Titania: Warm Knight.
Starting , Ike: Stalwart Heart, Greil: Heroic Exemplar, Soren: Addled Strategist, and Mist: Purest Spirit will be available as part of a new summoning event: Greil's Devoted. Check out their introductory video to learn more!