Welcome to EDH! How's this format treating you so far? How is it in comparison to other formats? And I love that commander too, even the art is beautiful. And besides my suggestions to make the deck stronger, you should look at "https://edhrec.com" to check out all the orzhov commanders and what cards are good for this commander. Check out "http://www.smileylich.com/mtg/magocracy/Magocracy_G1.html" as well for anything you can't find in the gatherer database. And look at "https://www.youtube.com/watch?v=Im1VuV7-qSI", I thought that was a fun theory but that could just be my interest in math.

Anyway, onto my arguments for a better deck. Like Mortify or Hero's Downfall instead of Murder? Or Unmake/ Ruthless Disposal v Eyeblight's Ending/ Bone Splinters? Gotta love that removal. Forsake the Worldly has become a favorite of mine, I was so happy to see that in your deck. There's also some other cards like Utter End, Pontiff of Blight, etc that fits your theme well. I also love non-combat victories, so I would add more cards like Zulaport Cutthroat and Debt to the Deathless.

Now onto the hard decisions. Like High Priest of Penance v Angel of Deliverance. Each has it's own pros and cons, but I thought I should argue for it. I would also replace Unraveling Mummy as it only supports Khenra Eternal and Gravedigger. I'd argue for Gifted Aetherborn or Vampire Nighthawk instead. I like where you were going with Gravedigger though, everyone needs some recursion. I'd argue for Phyrexian Reclamation or Ravos, Soultender to keep with the recursion, or load up some reanimation with Dread Return, Stitch Together, or Phyrexian Delver to keep with the ETB (enter the battlefield) effects. And if you want another general theme for the deck, consider Panharmonicon or Skybind. Lastly, you could include an infinite combo to make it more competitive, like Emeria Shepherd + Kor Cartographer to ramp all your Plains out.

So yah. I still love the deck and upvoted it, I just wanted to argue some cards and be devil's advocate. Also, EDH is my favorite format and I'm always here, so text me if you've any questions or need more help. Hope this helps

Thanks Oliveoil... I really liked some of these cards. I just went through some of the precons I had and added about half a dozen or so cards one of which was Mortify for Murder! There are still a few more that I would like to add which I will have to buy seperately. Ultimately I'm thinking I want to use less creatures and almost every card remove opponents hp or give me hp in some way. But I need more cards that create draw for either lands or cards in general. One addition I like is Underworld Connections and Well of Lost Dreams. I just need to test it out.