Are Ixhel, Scion of Atraxa and Vishgraz, the Doomhive really that much better
White already has good removal for handling the big stuff, it is dealing with the little things that white is most eager to expand on and Oppressive Rays gets that job done well
Though white decks have historically struggled to match the strength of decks of colors like green and blue in Commander, in recent years, white has received excellent support that accentuates its strengths and helps to alleviate previous shortcomings
Dimir Murktide is a top-tier deck in the format right now, and Emet-Selch fits in very nicely
While you could argue that the Paladin is cheaper, Nahiris affinity means youll rarely cast it for the full 6 mana, and it does an exceptional job cheating command tax since every turn you control Nahiri increases the number of equipment you control