Sirenídeo Rastro-Prísmeo

Criatura — Tritão Mago 2/1, 2U (3)
Lampejo
Quando Sirenídeo Rastro-Prísmeo entra em jogo, a permanente alvo torna-se da cor ou das cores de sua escolha até o final do turno.
"Ver para crer" é um fato explorado implacavelmente pelos sirenídeos quando lidam com os outros habitantes de Pântano Sombrio.
Illus. Wayne England

Creature - Merfolk Wizard
Flash
When Prismwake Merrow enters the battlefield, target permanent becomes the color or colors of your choice until end of turn.¹

Gatherer Card Rulings [Nov 2009]

• 5/1/2008: An effect that changes a permanent's colors overwrites all its old colors unless it specifically says "in addition to its other colors." For example, after Cerulean Wisps resolves, the affected creature will just be blue. It doesn't matter what colors it used to be (even if, for example, it used to be blue and black).
• 5/1/2008: Changing a permanent's color won't change its text. If you turn Wilt-Leaf Liege blue, it will still affect green creatures and white creatures.
• 5/1/2008: Colorless is not a color.
• 5/1/2008: You can choose any single color or any combination of more than one color. You can't choose colorless.
• 5/1/2008: This ability won't make an artifact stop being an artifact. It'll just be a colorful artifact.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/10)	Pântano Sombrio (Common)