Well, SGG didn’t prepare any future Legendary Troop summon so far. But if we go by the other Legendary Troop summons scheduled in the past (for internal testing obviously, it did not show up in the live game):
- by order of appearance in the data: Cleric/Fighter, Monk/Sorcerer, Paladin/Rogue, Ranger/Wizard and Druid/Barbarian.
- by scheduled date: Cleric/Fighter, Druid/Barbarian, Paladin/Rogue, Ranger/Wizard and Monk/Sorcerer.
So in short, we don’t know 