tyler1 yugioh card The Story Behind the Rarest Yu-Gi-Oh What Is The Yu-Gi-Oh Card

Soulless One originally had some black ability (regeneration, I believe), but the development thought it would be cooler if its extra ability was that it counted zombies in play and in the graveyard

Theyre great to cast at a discount, great to exile to make a bunch of tokens, and fantastic with a bunch of tokens in play since you can use them to get a bunch of extra combat steps to attack a player down

Once per turn, you can destroy one Set card on the field

Others are pointing out that in the past, certain other promo cards have been locked behind having a Premium membership, which is itself a monthly paid subscription (albeit $12/mo, with other benefits)