There are a lot of cool ways of putting out loads of Dragons at once in Commander, and if they all come in at the same time, you can quite easily end up dealing eight damage eight times, which is more than enough to end most fights
Chalice on one also requires specific answers, as Artifact destruction at one mana doesnt work
Like the aforementioned cards and Combat Celebrant

Academy Elite Academy Journeymage Academy Loremaster Academy Researchers Acererak the Archlich Adeliz, the Cinder Wind Adrix and Nev, Twincasters Aegar, the Freezing Flame Aegis Sculptor Aerie Mystics Aether Channeler Alabaster Mage Alandra, Sky Dreamer Alania's Pathmaker Alania, Divergent Storm Alchemist's Apprentice Alisaie Leveilleur Alphinaud Leveilleur Ambassador Laquatus Ambitious Augmenter Aminatou, Veil Piercer Amphin Pathmage Ana Battlemage Ana Disciple Anarchist Anathemancer Aphetto Alchemist Aphetto Exterminator Aphetto Grifter Aphetto Runecaster Apprentice Necromancer Apprentice Sorcerer Apprentice Wizard Araumi of the Dead Tide Arbiter of Knollridge Arcane Artisan Arcane Investigator Arcane Proxy Arcane Savant Arcanis the Omnipotent Archaeomancer Archaeomender Archetype of Imagination Architects of Will Archive Dragon Archive Haunt Archivist Archmage Emeritus Archmage of Echoes Archmage of Runes Arctic Aven Ardent Electromancer Arjun, the Shifting Flame Armorer Guildmage Artful Looter Artisan of Forms Ascended Lawmage Ashiok's Adept Ashiok's Forerunner Ashling, Rimebound Asmoranomardicadaistinaculdacar Asylum Visitor Atmosphere Surgeon Augur of Bolas Augur of Skulls Augury Adept Auramancer Auratouched Mage Auriok Windwalker Avalanche Caller Aven Augur Aven Fateshaper
