Professional Face-Breaker lets you cash in a treasure for a card while also generating more on combat damage
While many MTG players will inevitably be attracted to these franchises due to overlapping interest, these products can also draw people to Magic who have never been involved with the game before a demographic that is relatively unique to this series of releases
Land Tax hasnt seen a reprint since 4th Edition, isnt on the Reserved List and fits the bill on the nostalgia front, so it seems like a solid pick for the other white slot as a super powerful card that many players wouldnt necessarily already own a copy of and services the EDH market
These decks are also good at easily enabling spectacle or bloodthirst abilities
Sign in Blood can also become an expensive Shock to close the game out
So, as more turns pass, it will be easier to cast powerful, high-cost Summons