Since the early days of the game, black has been secondary with cards with blue being the king
TCGplayer tends to be a bit cheaper because of the competitive nature of their marketplace, but Star City Games and Card Kingdom are backed by years of renown and can be more convenient if you want your cards to come in one package instead of multiple envelopes
Despite Wizards being picked for the Pokmon TCG because of its success with MTG, I'd never really considered both products going through the same printing process, so to see them combined in such a bizarre way is an awesome bit of history for both games.
Nightbound (If a player casts at least two spells during their own turn, if becomes day next turn.)
They changed the mechanic to be whenever your commander entered the battlefield or attacked, so it rewarded keeping the commander in play instead of trying to get it killed
The choice is still there, however, to see three cards deeper into your deck and add any powerful card you just so happen to mill from it