Maybe consider running Chandra, Fire Artisan , seems like she'd work well with Sorin, and would help get some extra damage on the board

Thanks for the suggestion WolfTyrant1. Sorin’s static ability only applies on your turn, so Chandra works well then. I feel like most of the time she would be taking damage on your opponent’s turn, so you won’t get the life gain from Sorin. I’m more considering replacing Sorin with Chandra.

I would absolutely replace Sorin, Vengeful Bloodlord with Chandra, Fire Artisan . She's card advantage over and over again. Sorin does give you lifegain, especially with Sarkhan the Masterless , but it wouldn't be missed with Oath of Kaya and Gideon Blackblade plus people will be attacking your PWs instead of you. Also, his negative does nothing in a creatureless deck like this.

Personally, I would run some Duress or maybe even Kitesail Freebooter or Toll of the Invasion to get rid of The Elderspell .

musicman3310 thanks for the suggestions. The more I think about it, I think I want to replace Sorin, Vengeful Bloodlord with Karn, Scion of Urza . Karn draws you cards and the Constructs he makes pair well with the Servos from Saheeli, Sublime Artificer . With Karn you also don't have to worry about having double red. Do you have any thoughts on this?

I agree that Duress should be somewhere in the 75. I'll work on what to cut for it. I also think having my own two copies of The Elderspell in the sideboard would be a good idea.