This is at instant speed so you can do it to dig and find an answer, unlike most of these effects
For the first time in Magic: The Gathering history, Wizards of the Coast has created a supplemental set called March of the Machine: Aftermath to go along with a major Standard-legal set, showcasing a total of 50 cards when its digitally released on May 11
In a multiplayer game, if Xantcha's owner leaves the game, Xantcha leaves the game with them
And again, we see some more cryptic text
If you really want to stick it to that one Lier, Disciple of the Drowned player, there are a handful of cards that prevent your opponents from taking extra turns: Of these effects, Gerrard's Hourglass Pendant and Trouble in Pairs stand out as desirable effects for the average EDH deck