History of CR 609.1

Every distinct wording since 2010, newest first.

September 30, 2011 · Innistrad
An effect is something that happens in the game as a result of a spell or ability. When a spell, activated ability, or triggered ability resolves, it may create one or more one-shot or continuous effects. Static abilities may create one or more continuous effects. Text itself is never an effect.
June 17, 2011 · Commander 2011
An effect is something that happens in the game as a result of a spell or ability. When a spell,
February 4, 2011 · Mirrodin Besieged
An effect is something that happens in the game as a result of a spell or ability. When a spell, activated ability, or triggered ability resolves, it may create one or more one-shot or continuous effects. Static abilities may create one or more continuous effects. Text itself is never an effect.
October 1, 2010 · Scars of Mirrodin
An effect is something that happens in the game as a result of a spell or ability. When a spell,
February 1, 2010 · Worldwake
An effect is something that happens in the game as a result of a spell or ability. When a spell, activated ability, or triggered ability resolves, it may create one or more one-shot or continuous effects. Static abilities may create one or more continuous effects. Text itself is never an effect.