As Swirl the Mists enters the battlefield, choose a color word. All instances of color words in the text of spells and permanents are changed to the chosen color word.
2004-12-01
Swirl the Mists' ability also affects spells that are cast and permanents that enter the battlefield after Swirl the Mists enters the battlefield.
2004-12-01
This effect lasts as long as Swirl the Mists is on the battlefield. It ends as soon as Swirl the Mists leaves the battlefield.