It's exactly the type of interaction you want to be playing in Commander, since it deals with multiple opposing threats at once while proactively helping your own board
Merfolk Lords Lord of Atlantis is one of Magic's most iconic creatures, with Master of the Pearl Trident serving as a functional reprint that doesnt pump your opponent's merfolk
This isnt the last time Miriam will show up on this list, though
And just look at all the Knights in the format: Benalish Knight, Burning Shield Askari, Cadaverous Knight, Fallen Askari, Femeref Knight, Knight of Valor, Searing Spear Askari, Shadow Rider, Southern Paladin, Suq'Ata Lancer, Zhalfirin Commander, Zhalfirin Crusader, and Zhalfirin Knight