Each player mills X cards. For each creature card put into a graveyard this way, you create a tapped 2/2 black Zombie creature token. (To mill a card, a player puts the top card of their library into their graveyard.)
If a creature card has an ability that replaces going to the graveyard with moving somewhere else "instead," that card won't count toward the number of Zombies you get. Conversely, creature cards with a triggered ability that removes them from the graveyard when they're put there from anywhere (or your library) will count toward that number.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
Izzy2021-09-24
