[@MiddleEarthRoze] There is one thing that I will take issue with: Mia's ability to innately affect the weather. While Reshiram does create powerful flames, affecting the weather is not in its skillset. That's more Groudon's thing, and Groudon has been claimed. 

But otherwise... someone who can create and control flames, and therefore would not really be harmed by flames or high temperatures...

Rebeca is going to like her a lot.