Looking Back on the Good Times (BT3-107 U) [Release Special Booster 1.0]

Product Details

[Main] Trigger "De-Digivolve 1" on 1 of your opponent's Digimon. (Trash a card from the top of one of your opponent's Digimon. If it has no digivolution cards, or becomes a level 3 Digimon, you can't trash any more cards.) Then, if that Digimon's play cost is 4 or less. delete it.