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In response Mothra, one of humanity's greatest protectors, did battle with Battra and bested it, eventually sealing it away deep beneath the North Sea

Adriana, Captain of the Guard Adult Gold Dragon Agrus Kos, Spirit of Justice Agrus Kos, Wojek Veteran Akiri, Fearless Voyager Akiri, Line-Slinger Akroan Hoplite Alibou, Ancient Witness Alibou, Ancient Witness Alpine Houndmaster Anax and Cymede Angelic Captain Anim Pakal, Thousandth Moon Anya, Merciless Angel Arabella, Abandoned Doll Araa, Heart of the Spider Arbaaz Mir Arcbound Shikari Arcee, Sharpshooter Armory Paladin Asari Captain Ash, Party Crasher Astor, Bearer of Blades Aurelia, Exemplar of Justice Aurelia, the Law Above Aurelia, the Warleader Aurelia, the Warleader Aya of Alexandria Aziza, Mage Tower Captain Baird, Argivian Recruiter Balefire Liege Banon, the Returners' Leader Basandra, Battle Seraph Battlegate Mimic Bayek of Siwa Bell Borca, Spectral Sergeant Belligerent Hatchling Black Widow, Agile Avenger Blade Historian Blaze Commando Boros Battleshaper Boros Challenger Boros Guildmage Boros Reckoner Boros Recruit Boros Strike-Captain Boros Swiftblade Bre of Clan Stoutarm Brion Stoutarm Bruenor Battlehammer Bruse Tarl, Boorish Herder Bruse Tarl, Boorish Herder Bruse Tarl, Roving Rancher Bull Cerodon Bureau Headmaster Cadric, Soul Kindler Caparocti Sunborn Captain Marvel, Apex Avenger Captain Rex Nebula Cass, Hand of Vengeance Catharsis Cautery Sliver Cerodon Yearling Cloud, Planet's Champion Cloudshredder Sliver Cloudspire Coordinator Colossus of the Blood Age Commander Liara Portyr Commander Mustard Conduit Goblin Cori Mountain Stalwart Craig Boone, Novac Guard

If there is only one mismatch, it might be a simple oversight, but if several overlap, you should think carefully
My one reservation about Sceptre of Eternal Glory is that in more traditional environments its most likely just to be played in blue or green decks, which already have a way of leaning towards mana and stuff decks anyway