She helped us nail down the right suite of mechanics through playtests, to make sure that every element of the worldbuilding (nightmares, survivors, and so on) had their own identity
But what I love about the announcement was its honesty about what unbannings are
10 of these are monarch cards that don't stack up well just fyi Eowyn, Shieldmaiden, Weathered Wayfarer, Denethor, Stone Seer, Humble Defector, Archivist of Gondor, Faramir, Steward of Gondor, Verge Rangers, Aragorn, King of Gondor, Boromir, Gondor's Hope, Palace Jailer, Eomer, King of Rohan, Champions of Minas Tirith, Heirloom Blade, Vanquisher's Banner, Herald's Horn, Court of Ire, Fealty to the Realm, Oath of Eorl, Forth Eorlingas
Removal spells or abilities that care about mana value interact with it accordingly
Snappy was the last card to come out of the Invitational system, and also the best