History of CR 202.4

Every distinct wording since 2010, newest first.

May 3, 2019 · War of the Spark
Any additional cost listed in an object’s rules text or imposed by an effect isn’t part of the mana cost. (See rule 601, “Casting Spells.”) Such costs are paid at the same time as the spell’s other costs.
January 25, 2019 · Ravnica Allegiance
Any additional cost listed in an object's rules text or imposed by an effect isn't part of the mana cost. (See rule 601, "Casting Spells.") Such costs are paid at the same time as the spell's other costs.
May 1, 2014 · Journey into Nyx
Any additional cost listed in an object’s rules text or imposed by an effect isn’t part of the mana cost. (See rule 601, “Casting Spells.”) Such costs are paid at the same time as the spell’s other costs.
February 1, 2014 · Born of the Gods
Any additional cost listed in an object’s rules text or imposed by an effect isn’t part of the mana cost. (See rule 601, "Casting Spells.") Such costs are paid at the same time as the spell’s other costs.
September 30, 2011 · Innistrad
Any additional cost listed in an object's rules text or imposed by an effect isn't part of the mana cost. (See rule 601, "Casting Spells.") Such costs are paid at the same time as the spell's other costs.
June 17, 2011 · Commander 2011
Any additional cost listed in an object’s rules text or imposed by an effect isn’t part of the mana
April 1, 2011 · Duel Decks: Knights vs. Dragons
Any additional cost listed in an object's rules text or imposed by an effect isn't part of the mana cost. (See rule 601, "Casting Spells.") Such costs are paid at the same time as the spell's other costs.
February 4, 2011 · Mirrodin Besieged
Any additional cost listed in an object’s rules text or imposed by an effect isn’t part of the mana cost. (See rule 601, “Casting Spells.”) Such costs are paid at the same time as the spell’s other costs.
October 1, 2010 · Scars of Mirrodin
Any additional cost listed in an object’s rules text or imposed by an effect isn’t part of the mana
February 1, 2010 · Worldwake
Any additional cost listed in an object's rules text or imposed by an effect isn't part of the mana cost. (See rule 601, "Casting Spells.") Such costs are paid at the same time as the spell's other costs.