One said he could if he had two mana, so I Snapped his Birgi and untapped two of his lands, which let him use Tainted Pact to find Force of Will, incidentally exiling many important cards from his deck, and getting another card out of his hand to stop the other player from winning, which, in that spot, was far better for me than if Id been able to counter the Underworld Breach myself
Sans Black / Altruism (RGWU) excludes Black for tempo and protection strategies
Stadium Cards Stadiums might just be the easiest to understand
Sounds like all your stuff aligns with my findings though The normal shadowless backs are +15 and the fronts are -15
Though theres only one of these too, Miraidon is a Basic Pokemon with two attacks
Fortunately, it sounds like players wont have to wait too much longer for either one, at least according to the latest datamined leaks coming out of the mobile card game