Attuned Nino & Ginnungagap is the next summoning event for Fire Emblem Heroes, and we have details as to what’s planned. Rearmed Hero Ginnungagap: Ruler of Nihility, Attuned Hero Nino: Fang’s Heart and two others from the Fire Emblem: The Blazing Blade game will be made available. Isadora: Escot of Pherae and Harken: Troubled Warrior make up the rest of...