Vesuvan Shapeshifter (TSR) from Time Spiral Remastered, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Quinton Hoover
• Card Text:
  As Vesuvan Shapeshifter enters the battlefield or is turned face up, you may choose another creature on the battlefield. If you do, until Vesuvan Shapeshifter is turned face down, it becomes a copy of that creature, except it has “At the beginning of your upkeep, you may turn this creature face down.”
  Morph 1U