32 cards where the text includes “myriad”

Auton Soldier (Doctor Who #36)
Banshee of the Dread Choir (Commander Anthology #47)
Battle Angels of Tyr (Commander Legends: Battle for Baldur's Gate #9)
Blade of Selves (Commander Legends: Battle for Baldur's Gate #301)
Broodbirth Viper (Commander 2015 #10)
Caller of the Pack (Commander Anthology #94)
Chittering Dispatcher (Modern Horizons 3 Commander #63)
Conclave Evangelist (Ravnica: Clue Edition #27)
Corporeal Projection (Ravnica: Clue Edition #28)
Cybermen Squadron (Doctor Who #176)
Dalek Squadron (Doctor Who #65)
Duke Ulder Ravengard (Commander Legends: Battle for Baldur's Gate #272)
Elturel Survivors (Commander Legends: Battle for Baldur's Gate #172)
Firbolg Flutist (Commander Legends: Battle for Baldur's Gate #174)
Genasi Enforcers (Commander Legends: Battle for Baldur's Gate #177)
Gnoll War Band (Commander Legends: Battle for Baldur's Gate #178)
Hammers of Moradin (Commander Legends: Battle for Baldur's Gate #25)
Herald of the Host (Commander Masters #30)
Legion Loyalty (Commander Legends: Battle for Baldur's Gate #31)
Myriad Construct (Commander Masters #963)
Myriad Landscape (Duskmourn: House of Horror Commander #289)
Polygoyf (Modern Horizons 3 Commander #65)
Scion of Calamity (The Lost Caverns of Ixalan Commander #93)
Scurry of Squirrels (Bloomburrow Commander #33)
Sumala Rumblers (Ravnica: Clue Edition #45)
Tabaxi Toucaneers (Commander Legends: Battle for Baldur's Gate #46)
The Everflowing Well // The Myriad Pools (The Lost Caverns of Ixalan #56)
The Everflowing Well // The Myriad Pools (The Lost Caverns of Ixalan #56)
The Master, Multiplied (Doctor Who #146)
Tiamat's Fanatics (Commander Legends: Battle for Baldur's Gate #202)
Warchief Giant (Commander Anthology Volume II #127)
Wizards of Thay (Commander Legends: Battle for Baldur's Gate #105)
Wyrm's Crossing Patrol (Commander Legends: Battle for Baldur's Gate #51)

Though this query has ended, its relics still slumber in New Argive.