If an effect puts two or more cards on the top or bottom of a library at the same time, the owner of those cards may arrange them in any order. That library's owner doesn't reveal the order in which the cards go into their library.
18-07-2014
wotc
The owner of each attacking creature chooses whether to put it on the top or bottom of their library. The active player (the player whose turn it is) makes all of their choices first, followed by each other player in turn order.
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.
Dan Murayama Scott2021-09-24
