2022-10-07 : A card that you drew from another player’s library is still owned by that player. You still can’t put stickers on it.

2022-10-07 : Each player draws a card from a library that isn’t theirs, another Un- game exclusive. Remember to give the cards back to their owners at the end of the game.

2022-10-07 : If an effect instructs you to shuffle the card into your library (as opposed to “its owner’s library”), you can do that. You should sleeve the card with whatever sleeves your library is using, if any.

2022-10-07 : If you play a land or cast a permanent spell that you drew from another player’s library, that permanent will enter the battlefield under your control. If you cast an instant or sorcery spell that you took from an opponent, it will go to that player’s graveyard.