To “scry N” means to look at the top N cards of your library, then put any number of them on the bottom of your library in any order and the rest on top of your library in any order.
July 3, 2020 · Core Set 2021
To “fateseal N” means to look at the top N cards of an opponent’s library, then put any number of them on the bottom of that library in any order and the rest on top of that library in any order.
April 27, 2018 · Dominaria
To clash, a player reveals the top card of their library. That player may then put that card on the bottom of their library.
September 30, 2016 · Kaladesh
A player may planeswalk only during a Planechase game. Only the planar controller may planeswalk. See rule 901, “Planechase.”
May 1, 2014 · Journey into Nyx
Only a scheme card may be set in motion, and only during an Archenemy game. Only the archenemy may set a scheme card in motion. See rule 312, “Schemes,” and rule 904, “Archenemy.”
July 1, 2012 · Magic 2013
Only a scheme card may be set in motion, and only during an Archenemy game. Only the archenemy may set a scheme card in motion. See rule 312, "Schemes," and rule 904, "Archenemy."
September 30, 2011 · Innistrad
Only a scheme card may be set in motion, and only during an Archenemy game. Only the archenemy may set a scheme card in motion. See rule 311, "Schemes," and rule 904, "Archenemy."
June 17, 2011 · Commander 2011
Only a face-up ongoing scheme card may be abandoned, and only during an Archenemy
April 1, 2011 · Duel Decks: Knights vs. Dragons
Only a face-up ongoing scheme card may be abandoned, and only during an Archenemy game. See rule 311, "Schemes," and rule 904, "Archenemy."
February 4, 2011 · Mirrodin Besieged
Only a face-up ongoing scheme card may be abandoned, and only during an Archenemy game. See rule 311, “Schemes,” and rule 904, “Archenemy.”
October 1, 2010 · Scars of Mirrodin
Only a face-up ongoing scheme card may be abandoned, and only during an Archenemy
June 18, 2010 · Archenemy
Only a face-up ongoing scheme card may be abandoned, and only during an Archenemy game. See rule 311, "Schemes," and rule 904, "Archenemy."