Swirl the Mists 
Enchantment
As this enchantment enters, choose a color word. All instances of color words in the text of spells and permanents are changed to the chosen color word.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL