mewtwo pokemon card basic Scarlet & Violet Promo #052 Captured in a crystal Mewtwo ex (Genetic Apex #282/226,

This is what you'll discover

This is especially true if youre using a Commander with a colorless identity, since youre going to be Limited on tutors

Hammer Time Colossus Hammer | Illustration by Dmitry Burmak Creatures (18) Ornithopter x4 Esper Sentinel x4 Puresteel Paladin x4 Stoneforge Mystic x4 Giver of Runes x2 Artifacts (11) Colossus Hammer x4 Shadowspear Springleaf Drum x3 Kaldra Compleat Gingerbrute Nettlecyst Enchantments (4) Lands (22) Marsh Flats x3 Urza's Saga x4 Hallowed Fountain Inkmoth Nexus x3 Arid Mesa x3 Plains x4 Seachrome Coast x3 Horizon Canopy Instants (5) Spell Pierce x3 Blacksmith's Skill x2 Sideboard (15) Blacksmith's Skill Pithing Needle Drannith Magistrate x2 March of Otherworldly Light x2 Sanctifier en-Vec x3 Path to Exile x2 Spell Pierce Relic of Progenitus Burrenton Forge-Tender Manriki-Gusari This decklist won a Modern Challenge on MTGO in the hands of Diem4x

If youre super confused at this point because you have no idea what proxies are, let me explain: proxy cards are essentially printed, homemade copies of MTG cards with different art or abilities (sometimes), or a completely custom card that doesnt exist in Magic like this or this