trading card sleeves hobby lobby 400 Hard Plastic, 3"x 4" Card Holder, Sports Cards Protectors for Top Baseball Game Sports Cards Cases (200 Hard Sleeve + 200 Soft Sleeves) : Toys & Games The Gathering Trading Card Sleeves: Various Sizes

Each placed card reduces the play cost.[On Play] De-Digivolve 1 1 of your opponent's Digimon, then, if DigiXrosing with 2 cards, delete 1 of your opponent's Digimon with a play cost of 5 or less.[All Turns] When this Digimon would be deleted, by returning 1 black level 4 or lower Digimon card from this Digimon's digivolution cards to its owner's hand, you may play 1 [SkullKnightmon] or [DeadlyAxemon] from this Digimon's digivolution cards without paying its memory cost

in the Duskmourn: House of Horror Card Image Gallery

The actual problem here is that you dont often want to use this on turn two on draw, because you might need to discard

each one point of power you can add to a creature youre going to sacrifice with Gisa translates into one more 2/2 Zombie