Nightcreep

Instant, BB (2)
Until end of turn, all creatures become black and all lands become Swamps.
"Please tell me I'm hallucinating. I'd rather be crazy than here."
-Gorev Hadszak, Wojek investigator
Illus. Jeff Miracola

Gatherer Card Rulings [Nov 2009]

• 5/1/2006: This effect overwrites all creatures' colors. Creatures will be black instead of any other color or colors.
• 5/1/2006: This effect overwrites all lands' land types. Lands will be Swamps instead of any other land types. This won't affect a land's supertypes (such as basic or legendary). Lands will lose their normal abilities and have the ability "{T}: Add {B} to your mana pool" instead.
• 5/1/2006: If a permanent is both a creature and a land, Nightcreep replaces all of its land types with Swamp, but it doesn't affect its creature types. The creature land loses all abilities generated by its rules text and its previous land types but retains any abilities granted to it by other effects. For example, an animated Blinkmoth Nexus becomes a black creature land with the land subtype Swamp whose only abilities are flying and "{T}: Add {B} to your mana pool."
• 5/1/2006: A land or creature that enters the battlefield after Nightcreep resolves won't be affected by it.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/9)	Dissension (Uncommon)