Juxtapose (CHR) from Chronicles, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Justin Hampton
• Card Text:
  You and target player each choose one of the creatures you control with the highest casting cost. Exchange control of these creatures. Then do the same for artifacts. If one of the players does not control a creature or artifact, don’t exchange that type of card.