17 cards where the set is “dom” and the cards can be your commander and the number of identity colors is 2

Adeliz, the Cinder Wind (Dominaria #190)
Arvad the Cursed (Dominaria #191)
Aryel, Knight of Windgrace (Dominaria #192)
Firesong and Sunspeaker (Dominaria #280)
Garna, the Bloodflame (Dominaria #194)
Grand Warlord Radha (Dominaria #195)
Hallar, the Firefletcher (Dominaria #196)
Jhoira, Weatherlight Captain (Dominaria #197)
Kazarov, Sengir Pureblood (Dominaria #96)
Niambi, Faithful Healer (Dominaria #272)
Raff Capashen, Ship's Mage (Dominaria #202)
Rona, Disciple of Gix (Dominaria #203)
Shalai, Voice of Plenty (Dominaria #35)
Shanna, Sisay's Legacy (Dominaria #204)
Slimefoot, the Stowaway (Dominaria #205)
Tatyova, Benthic Druid (Dominaria #206)
Tiana, Ship's Caretaker (Dominaria #208)

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