The Prismatic Piper (CMM) from Commander Masters, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Seb McKinnon
• Card Text:
  If the Prismatic Piper is your commander, choose a color before the game begins. The Prismatic Piper is the chosen color.
  Partner (You can have two commanders if both have partner.)