Once you have the city's blessing, you have it for the rest of the game, even if you lose control of some or all your permanents
Table of Contents show The Deck Command Tower | Illustration by Games Workshop Commander (1) Planeswalker (2) Ob Nixilis of the Black Oath Ob Nixilis, the Adversary Creature (28) Aspiring Champion Bloodgift Demon Bloodthirster Burning-Rune Demon Chaos Defiler Demon of Wailing Agonies Demonlord Belzenlok Dream Devourer Exalted Flamer of Tzeentch Great Unclean One Herald of Slaanesh Kardur, Doomscourge Lord of Change Lord Xander, the Collector Master of Cruelties Orcus, Prince of Undeath Plague Drone Rakdos, Lord of Riots Rakdos, the Showstopper Raphael, Fiendish Savior Razaketh, the Foulblooded Reaper from the Abyss Rune-Scarred Demon Sakashima of a Thousand Faces Sakashima the Impostor Thassa, Deep-Dwelling Varragoth, Bloodsky Sire Vilis, Broker of Blood Instant (11) Bedevil Blood for the Blood God
Keeping larger MTG-style projects organised clearly before production can make a huge difference to both proofing accuracy and gameplay consistency
If thats the case, then you might want to add more sources of card advantage
