Balor's Magical Eye is a Weiß Schwarz card from The Seven Deadly Sins: Revival of The Commandments SDS/SX05-026. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If your opponent's hand has 1 or more cards, your opponent chooses 1 card in their hand. Declare any number, and they reveal the chosen card. If that card's power is the same as the number you declared, choose up to 2 《Britannia》 characters in your waiting room, and put them into your stock in any order. (Climax and events are regarded as 0 power) Search your deck for up to 1 《Britannia》 character, reveal it to your opponent, put it into your hand, and shuffle your deck.