rfid card holder sleeve Blocking Credit Sleeves RFID SECURITY Uxcell RFID Blocking Sleeves Aluminum

Gateway + Shi En = Shi En + 2 Kizan Can either leave up the Kizan or go into Roach vs some decks

When an opponent's monster declares an attack while this card is in your Graveyard and you have no cards in your hand or field: You can Special Summon this card

PSE Prismatic Secret Rare Seleglare the Luminous Lunar Dragon X LIGHT Level 6 [ DragonEffect ] ATK 2400 DEF 1000 You can Normal Summon/Set this card without Tributing, but its original ATK becomes 1500

So, it gives them an outlet to reprint some more expensive random cards

Its hard to imagine a black deck that wouldnt be happy with this ability

Theres no doubt that this is one of the most potent choices you can go with