When you planeswalk to The Pit, each player creates their choice of a 3/3 white Angel creature token with
flying (This creature can't be blocked except by creatures with flying or reach.) or a 6/6 black Demon creature token with
flying (This creature can't be blocked except by creatures with flying or reach.),
trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.), and "At the beginning of your upkeep, sacrifice another creature. If you can't, this creature deals 6 damage to you."
Whenever chaos ensues, each player sacrifices a nonartifact creature.