A player can’t attack opponents who aren’t seated next to them, planeswalkers that aren’t controlled by opponents seated next to them, or battles that aren’t protected by opponents seated next to them.
May 3, 2019 · War of the Spark
A player can’t attack opponents who aren’t seated next to them.
January 25, 2019 · Ravnica Allegiance
A player can't attack opponents who aren't seated next to them.
April 27, 2018 · Dominaria
A player can’t attack opponents who aren’t seated next to them.
February 1, 2014 · Born of the Gods
A player can’t attack opponents who aren’t seated next to him or her.
September 30, 2011 · Innistrad
A player can't attack opponents who aren't seated next to him or her.
June 17, 2011 · Commander 2011
A player can’t attack opponents who aren’t seated next to him or her.
April 1, 2011 · Duel Decks: Knights vs. Dragons
A player can't attack opponents who aren't seated next to him or her.
October 1, 2010 · Scars of Mirrodin
A player can’t attack opponents who aren’t seated next to him or her.
June 18, 2010 · Archenemy
A player can't attack opponents who aren't seated next to him or her.