An extra card and a 4/4 every turn is basically unbeatable
No Matter What" in the flavor text, which expresses Akroma's burning desire to smite evil and tirelessly purge the world of the wicked

Hans, Run!" Alien Invasion Arachnomania Arms Race Ashling's Prerogative Assemble the Legion Awaken the Ancient Barbarian Class Bitter Reunion Bitter Work Blacksmith's Talent Break Through the Line Cartouche of Zeal Clout of the Dominus Concordant Crossroads Corpses of the Lost Crackling Emergence Cyclops of Eternal Fury Daring Piracy Dawn of the Dead Daxos's Torment Demolisher Spawn Desert Warfare Destiny Spinner Detective's Phoenix Determined Iteration Draconic Destiny Dragon Breath Dragon Tempest Druid Class Echo of Death's Wail Elemental Mastery Emblem of the Warmind Enduring Courage Escape Velocity Esper Terra Etching of Kumano Fear of Being Hunted Ferocification Fervor Fires of Yavimaya Flameshadow Conjuring Footfall Crater Frenzied Fugue Frontline Heroism Frostcliff Siege Gimli's Reckless Might Goblin Assault Goblin War Paint Goblinslide Grim Reaper's Sprint Hammer of Purphoros Hammerhand Harmonious Emergence Hazoret's Favor Hot Pursuit Impromptu Raid In the Darkness Bind Them In the Web of War Infectious Bloodlust Instill Energy Invigorating Hot Spring Kardur's Vicious Return Kickoff Celebrations Killer Instinct Legion's Initiative Lightning Prowess Mark of Fury Mass Hysteria Meek Attack Messenger's Speed Might Makes Right

The dungeon, as well as the initiative mechanic, were introduced in Commander Legends: Battle for Baldur's Gate
Wisdom of Ages Wisdom of Ages is a supreme card advantage sorcery and would be immediately banned or broken if it didn't exile itself as it resolves
The first set, called Genetic Apex, has over 200 different cards, but only three of them are special immersive cards