Put target creature into its owner’s library second from the top.
"They took me and set me on the pinnacle of Orthanc. I stood alone on an island in the clouds; I had no chance of escape, and my days were bitter and cold."n—Gandalf
If the target creature's controller has zero cards left in their library when Isolation at Orthanc resolves, that creature becomes the top card of their library.
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.