cards that give flash mtg all have MTG : How works Teferi, Mage of Zhalfir : Flash (While its phased out Rules Text: Flash, 703 cards

Note that the Collector's Edition versions of Warhammer 40,000 Commander decks include surge foil versions of cards shown here

9: Yshtola Rhul Where [[Obeka, Splitter of Seconds]] lets you double up upkeeps, [[Yshtola Rhul]] gives you extra end steps

Wickerfolk Thresher Wickerfolk Thresher shows up for an honest days work harvesting the fields of, uh, people

Return that card to the battlefield under its owners control at the beginning of the next end step

The vast majority of all the Magic cards that have ever been opened or owned came from a booster pack

My mana costs are expensive so I will have to cheat the cards out is probably also not where you want to take the deck if you wish to stay within BCs boundaries