Fairy King's Forest is a Weiß Schwarz card from The Seven Deadly Sins: Revival of The Commandments SDS/SX05-052. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you do not have a 《Britannia》 character, this card cannot be played from your hand. Choose 1 of the following effects, and perform it. "Choose 1 《Britannia》 character in your waiting room, and return it to your hand." "Choose 1 《Britannia》 character in your waiting room, put it into your stock, choose 1 of your 《Britannia》 characters, and that character gets +1500 power until the end of your opponent's next turn." If your memory has 2 or less cards, put this card into your memory.