Any instant or sorcery spell with the supertype “legendary” is subject to a casting restriction. A player can’t cast a legendary instant or sorcery spell unless that player controls a legendary creature or a legendary planeswalker.
January 25, 2019 · Ravnica Allegiance
Any instant or sorcery spell with the supertype "legendary" is subject to a casting restriction. A player can't cast a legendary instant or sorcery spell unless that player controls a legendary creature or a legendary planeswalker.
April 27, 2018 · Dominaria
Any instant or sorcery spell with the supertype “legendary” is subject to a casting restriction. A player can’t cast a legendary instant or sorcery spell unless that player controls a legendary creature or a legendary planeswalker.
September 29, 2017 · Ixalan
Any permanent with the supertype “world” is subject to the state-based action for world permanents, also called the “world rule” (see rule 704.5k).
May 1, 2014 · Journey into Nyx
Any permanent with the supertype “world” is subject to the state-based action for world permanents, also called the “world rule” (see rule 704.5m).
September 30, 2011 · Innistrad
Any permanent with the supertype "world" is subject to the state-based action for world permanents, also called the "world rule" (see rule 704.5m).