Fire-Belly Changeling (DDG) from Duel Decks: Knights vs. Dragons, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Randy Gallegos
• Card Text:
  Changeling (This card is every creature type at all times.)
  R: Fire-Belly Changeling gets +1/+0 until end of turn. Activate this ability no more than twice each turn.