card deck sleeves Dale of Merchants Compatible Sleeve Bundle (8808 X 1) they provide a crystal Card sleeve - Wikipedia

[When Attacking] De-Digivolve 1 1 of your opponent's Digimon

Slightly better is the 'You'll Be Sorry!' ability

UR Ultra Rare Blackwing - Bora the Spear X DARK Level 4 [ Winged BeastEffect ] ATK 1700 DEF 800 If you control a "Blackwing" monster other than "Blackwing - Bora the Spear", you can Special Summon this card (from your hand)

(If a card with a Patrol Counter would be destroyed by battle or card effect, remove 1 Patrol Counter from it instead.) Side Deck 14 Key Man the Key Warrior X EARTH Level 2 [ Warrior / Effect ] ATK 1000 DEF 500 Once per turn, during your Main Phase: You can make this card Level 3 until the End Phase