After all, the Wizard World is a Great World; it cannot possibly be without a hidden ace!
In fact, there are more than one.
For instance, the Witch Ancestor, who delved deep underground to seal the Heart of the World in ancient times.
Though the Witch Ancestor is dead, there is still an opportunity for resurrection. At a critical moment, if revived, it would grant the Wizard World an additional strongest expert!
Also consider the Black Witch King, loathed by all wizarding factions, the Mechanical Witch King owning the Sky City, and the fallen Guardian Witch King!
The Black Witch King and Mechanical Witch King, being the oldest surviving Wizard Kings, each have their own hidden cards, capable of unleashing immense frightening power when needed.
These were measures each prepared after an epic calamity in the Wizard World during ancient times, intended to be used against invading enemies should they be breached.
