Agrus Kos, Wojek Veteran Akiri, Line-Slinger Akroan Hoplite Anax and Cymede Anim Pakal, Thousandth Moon Arcbound Shikari Baird, Argivian Recruiter Bell Borca, Spectral Sergeant Blaze Commando Boros Battleshaper Boros Challenger Boros Recruit Boros Strike-Captain Boros Swiftblade Caparocti Sunborn Cloud, Planet's Champion Commander Liara Portyr Commander Mustard Craig Boone, Novac Guard Duergar Assailant Duergar Mine-Captain Duke Ulder Ravengard EPF Point Squad Fallaji Vanguard Fortress Cyclops Foundry Champion Fresh-Faced Recruit Garrison Sergeant General Ferrous Rokiric Gerrard, Weatherlight Hero Goblin Legionnaire Hammer Dropper Hearthfire Hobgoblin Hero of the Nyxborn Iroas's Champion Jenny, Generated Anomaly Judoon Enforcers Kalemne, Disciple of Iroas Lightning, Army of One Mabel, Heir to Cragflame Marvel Boy, Noh-Varr Mirror-Shield Hoplite Odric, Blood-Cursed Ordruun Mentor Ordruun Veteran Resolute Blademaster Seedglaive Mentor Sephiroth, Fallen Hero Soltari Guerrillas Spark Trooper Sunhome Enforcer Swathcutter Giant Swiftblade Vindicator Tajic, Blade of the Legion Tajic, Legion's Edge Tenth District Legionnaire Thundersong Trumpeter Veteran Guardmouse Viashino Firstblade Weapons Trainer Wojek Halberdiers

DOUBLE BLIND SPECULATION So, theres ten of my best guesses (though far from my only ones) as to which doubling cards Wizards might have slipped into Double Masters
This one is a bit of trouble to set up and is a straight dead card in topdeck mode and laughable against swarms of aggressive Boros and Gruul options that will run over a player trying to get this attached and online for a potentially useless return
For just a single mana in any color identity, you can turn off creature reanimation and green battlefield tutors such as Eldritch Evolution
Next, these decks are comprised of cards from the first four chapters of Disney Lorcana
I have been bullish on Contagion Engine for quite a while and that seems like it could do some work here