Sakashima's Student (PCA) from Planechase Anthology, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Brian Snõddy
• Card Text:
  Ninjutsu 1U (1U, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
  You may have Sakashima's Student enter the battlefield as a copy of any creature on the battlefield, except it's a Ninja in addition to its other creature types.