Common Cause

Enchantment, 2W (3)
Nonartifact creatures get +2/+2 as long as they all share a color.
Mercadia City's troops are at their best when they have no enemy to fight.
Illus. John Matson

Crystal Keep Rulings Summaries

• The ability gives +2/+2 to all creatures which are not artifact creatures, as long as every one of those creatures is of the same color. They can have additional colors beyond the one they share, but they all have to share one color. If any creature is not of the shared color, the bonus is lost. [MM FAQ 1999/09/22]
• It really does mean "all creatures", including your opponent's. [MM FAQ 1999/09/22]

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Mercadian Masques (Rare)