Flying
When Burning-Rune Demon enters, you may search your library for exactly two cards not named Burning-Rune Demon that have different names. If you do, reveal those cards. An opponent chooses one of them. Put the chosen card into your hand and the other into your graveyard, then shuffle.
While in your library, a double-faced card has only the name of its front face. It's not possible to reveal two of the same double-faced card this way.
05-02-2021
wotc
If you choose not to search your library, no cards are revealed or put anywhere else, and you don't shuffle.
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.