If the total cost includes a mana payment, the player then has a chance to activate mana abilities (see rule 605, “Mana Abilities”). Mana abilities must be activated before costs are paid.
January 25, 2019 · Ravnica Allegiance
If the total cost includes a mana payment, the player then has a chance to activate mana abilities (see rule 605, "Mana Abilities"). Mana abilities must be activated before costs are paid.
July 17, 2015 · Magic Origins
If the total cost includes a mana payment, the player then has a chance to activate mana abilities (see rule 605, “Mana Abilities”). Mana abilities must be activated before costs are paid.
February 1, 2014 · Born of the Gods
The player pays the total cost in any order. Partial payments are not allowed. Unpayable costs can’t be paid.
September 30, 2011 · Innistrad
The player pays the total cost in any order. Partial payments are not allowed. Unpayable costs can't be paid.
June 17, 2011 · Commander 2011
The player pays the total cost in any order. Partial payments are not allowed. Unpayable
April 1, 2011 · Duel Decks: Knights vs. Dragons
The player pays the total cost in any order. Partial payments are not allowed. Unpayable costs can't be paid.
February 4, 2011 · Mirrodin Besieged
The player pays the total cost in any order. Partial payments are not allowed. Unpayable costs can’t be paid.
October 1, 2010 · Scars of Mirrodin
The player pays the total cost in any order. Partial payments are not allowed. Unpayable
February 1, 2010 · Worldwake
The player pays the total cost in any order. Partial payments are not allowed. Unpayable costs can't be paid.