room cards mtg I'm confused about this card and the "Room" mechanic : r/magicTCG Top 10 Rooms in Magic:

1 Double Vision

The visual composition captures the fierce daughter of Kaido brandishing her massive kanabo club against a vivid background, complete with a dedicated black serial tracking window emblazoned in the upper left corner

Beyond its collector's allure, it stands as a cherished memento, representing a momentous milestone in the vibrant history of The Pokmon Company and the indelible mark left by President Ishihara on the world of Pokmon

It also allows some lifelink shenanigans to happen as well, giving Black some added reach for those triggers

Use the number of +1/+1 counters on Ulamog at the time its annihilator ability resolves to determine how many permanents defending player should sacrifice

Be aware that while you will find many listings priced around $50, you should always confirm the contents with the seller