Conclave Equenaut (DDF) from Duel Decks: Elspeth vs. Tezzeret, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Terese Nielsen
• Card Text:
  Convoke (Each creature you tap while casting this spell reduces its cost by 1 or by one mana of that creature's color.)
  Flying