25 cards where the name matches the regex /^x/ and it’s legal in Commander

Xanathar, Guild Kingpin (Adventures in the Forgotten Realms #239)
Xander's Lounge (Streets of New Capenna #260)
Xander's Pact (New Capenna Commander #43)
Xantcha, Sleeper Agent (Commander Masters #362)
Xanthic Statue (Weatherlight #163)
Xantid Swarm (Eternal Masters #193)
Xathrid Demon (Commander 2014 #170)
Xathrid Gorgon (Magic 2013 #118)
Xathrid Necromancer (Commander 2020 #141)
Xathrid Slyblade (Magic 2015 #124)
Xavier Sal, Infested Captain (The Lost Caverns of Ixalan Commander #14)
Xenagos, God of Revels (The Lost Caverns of Ixalan Commander #295)
Xenagos, the Reveler (Commander Legends: Battle for Baldur's Gate #853)
Xenic Poltergeist (Masters Edition IV #104)
Xenk, Paladin Unbroken (Secret Lair Drop #1237)
Xenograft (New Phyrexia #51)
Xenosquirrels (Unfinity #96)
Xerex Strobe-Knight (March of the Machine #85)
Xiahou Dun, the One-Eyed (Masters Edition III #83)
Xira Arien (Dominaria Remastered #205)
Xira, the Golden Sting (Dominaria United Commander #48)
Xolatoyac, the Smiling Flood (The Lost Caverns of Ixalan Commander #8)
Xorn (Adventures in the Forgotten Realms #167)
Xun Yu, Wei Advisor (Portal Three Kingdoms #93)
Xyris, the Writhing Storm (Dominaria United Commander #175)

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