For example, if Mystic Remora has three age counters on it when its cumulative upkeep ability triggers, it gets another age counter and then its controller chooses to either pay or sacrifice it
There's a lot of really notable cards that didn't make the cut, however, such as the likes of Teleportation Circle and Conjurer's Closet for repeated flickers or Cosmic Intervention for a more sweeping solution
Whichever means you find to put cards into your graveyard will get you there
Some standout creatures include Ramses, Massacre Girl, Gisa, Prosper, Opposition Agent, and Dockside Extortionist, each offering unique advantages in gameplay
The logic behind these decisions is the Game Changer list filled with game warping cards
Boosters have always had 15 cards (well, most of them, anyway) because that's what Richard Garfield chose to do with Alpha , years before designing for Draft was even a thing