Visit — Choose an opponent. They choose a creature they control, then you choose a creature you control. You may exile the chosen creatures. If you do, return them to the battlefield under their owners’ control at the beginning of the next end step. Otherwise, the chosen creatures fight each other.
If either you or the chosen opponent controls no creatures, the other player still chooses a creature they control. You can exile that creature and return it to the battlefield under its owner’s control at the beginning of the next end step. If you don’t exile it, nothing happens. It won’t fight anything.
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.