It means that the sets were always meant to be played together, in which case Magic: The Gatherings old block format of drafts, where you'd take two from one set and one from the other, would have been more logical
P/T Number 202 Language English Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pauper, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) Saga creatures have two sections to their text boxes
They could potentially make hundreds or even thousands of dollars selling off playsets of cards such as Alpha dual lands, Modern/Legacy staples, and rare alternate art cards
The second one is Burn in the form of Creeping Chill and Conflagrate (assuming you play it)
In contrary to the other creature-based decks, Vampiric Bloodlust has a decent amount of board control with Merciless Eviction and Fell the Mighty as major board wipes and a lot of single-target removals
Single cards will be shipped in a sleeve and secured in a cardboard box by regular mail