The activation cost is everything before the colon (:). An ability’s activation cost must be paid by the player who is activating it.
January 25, 2019 · Ravnica Allegiance
The activation cost is everything before the colon (:). An ability's activation cost must be paid by the player who is activating it.
February 1, 2014 · Born of the Gods
The activation cost is everything before the colon (:). An ability’s activation cost must be paid by the player who is activating it.
September 30, 2011 · Innistrad
The activation cost is everything before the colon (:). An ability's activation cost must be paid by the player who is activating it.
June 17, 2011 · Commander 2011
The activation cost is everything before the colon (:). An ability’s activation cost must be
April 1, 2011 · Duel Decks: Knights vs. Dragons
The activation cost is everything before the colon (:). An ability's activation cost must be paid by the player who is activating it.
February 4, 2011 · Mirrodin Besieged
The activation cost is everything before the colon (:). An ability’s activation cost must be paid by the player who is activating it.
October 1, 2010 · Scars of Mirrodin
The activation cost is everything before the colon (:). An ability’s activation cost must be
July 16, 2010 · Magic 2011
The activation cost is everything before the colon (:). An ability's activation cost must be paid by the player who is activating it.
February 1, 2010 · Worldwake
An activated ability is the only kind of ability that can be activated. If an object or rule refers to activating an ability without specifying what kind, it must be referring to an activated ability.