Jor Kadeens +3/+0 anthem doesnt look like much, but it really powers up those myr into actual combat threats
Its very on-theme for Orzhov, and seems like the perfect blend of obscure jank combo with cards that drain half of your opponents life and actual synergy with Orzhov extort cards
Far more impactful and important to bear in mind when approaching your first game, is which bread and butter common cards other players are valuing the highest
Being modal, you get another option
As long as you're in a format where you can play Fetchlands to fuel your graveyard, it's essentially an upgraded Llanowar Elves that can heal you and damage your opponents without having to go through their creatures
Doubling Season/Anointed Procession/Mondrak, Glory Dominus/Parallel Lives These arent really Food cards, but they are cards that any Food deck would die for in Commander