Greyknightsmon EX4-021

Effect: [On Play] ＜De-Digivolve 1＞ 1 of your opponent’s Digimon (Trash the top card. You can’t trash past level 3 cards). Then, all of your opponent’s level 4 or lower Digimon can’t attack until the end of your opponent’s turn._x000D_
[All Turns] When this Digimon would be deleted or returned to your hand or deck, you may play 1 [MetalGreymon] and 1 [DarkKnightmon] from this Digimon’s digivolution cards without paying the costs.