Mysterious Guard - LOD-021 - Common - 1st Edition from Legacy of Darkness 1st Edition, available at 401 Games Canada.

• Rarity: Common
• Card Text:
  FLIP: Return 1 face-up monster on the field to the top of its owner's Deck. At the same time, if there is a face-up Warrior-Type monster on your side of the field, you can return another face-up monster to its owner's hand.