Warner Bros. to Launch Hybrid Physical and Digital DC Comics-Themed NFT Trading Cards Warner Bros. is creating over 6 million DC Comics-inspired physical trading cards packaged with redeemable NFTs that will be available later this month. Cartamundi, a card and board game company, will design the cards, which will feature 155 different superheroes. The NFTs are being minted on the Ethereum sidechain Immutable X. Warner Bros. also plans to issue a few limited-edition cards using imagery and characters from the latest DC Comics film, “The Batman,” starring Robert Pattinson.