17 cards where the text includes “myriad” and the card types include “creature” and the color identity ≤ BRW and (the card is available on Paper) and it’s legal in Commander

Banshee of the Dread Choir (Commander Anthology #47)
Battle Angels of Tyr (Commander Legends: Battle for Baldur's Gate #9)
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)
Myriad Construct (Commander Masters #963)
Tabaxi Toucaneers (Commander Legends: Battle for Baldur's Gate #46)
The Master, Multiplied (Doctor Who #146)
Tiamat's Fanatics (Commander Legends: Battle for Baldur's Gate #202)
Warchief Giant (Commander Anthology Volume II #127)
Wyrm's Crossing Patrol (Commander Legends: Battle for Baldur's Gate #51)

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