The Mark Rosewater adage applies when you need so many different cards within a narrow set of colors
P/T Number 130 Language English Legal Formats Commander, Legacy, Modern, Pauper, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pioneer, Standard, Timeless Rulings (8/1/2008) The ability triggers whenever you cast a spell that's both of its listed colors
At the beginning of your end step, if Kaito Shizuki entered the battlefield this turn, he phases out.: +1: Draw a card
1 Zekrom ex is Key to Miraidon's Triumphant Return Card Number: 172/086 For the better part of the start of the rotation, Miraidon has been lurking on the edges of the format, as it lacked a consistent power card that allowed it to close games, so it was only used as a consistency piece in Joltik Box decks