When Throne of Eldraine came out, I was asked about the Green Knight
Flying Each creature spell you cast has emerge
To survive long enough to win the game with this Room, while also setting it up, you need to end up with lots of cheaper Doors that do impact the board and slow the game down
Additionally, I think this card can consolidate sideboard slots for the Tron matchup, as this card will go a long way to disrupting Tron by turning off their Expedition Maps, Chromatic Stars / Spheres, Oblivion Stones, and Walking Ballistas, which in turn takes a ton of pressure off Meddling Mage to name cards like Ugin, the Spirit Dragon and Wurmcoil Engine
Other times your ramp is so good you can just cast the seven drop in your hand rather than Order something up