The tag implication #50463 ultimate_mode_miraidon -> miraidon has been approved.
Reason: It's one of the five forms of the Pokemon Miraidon
https://bulbapedia.bulbagarden.net/wiki/Miraidon_(Pok%C3%A9mon)
EDIT: The tag implication ultimate_mode_miraidon -> miraidon (forum #362031) has been approved by @gattonero2001.
Updated by auto moderator