I ran a highly similar deck but that was a bit outdated. I stomped my way through the ladder till Diamond during the Shim’zar period (but anything could happen below Diamond so my opinion may not weigh as much as yours).
I have 1~2 Repulsor Beast, Saberspine Tiger and a 1-off Bone Swarm. Pulsor sets up good Ankh hits, Tiger takes care of troublesome low-cost high-priority targets like Obelisks, Kobeholder, Heartseeker .etc, and Bone Swarm is a nice little surprise to mess up with Reva and artifact holders. Oh and you desperately need Scorn for the 1 damage pings.
I use Lightbender instead of Shroud. Lightbender could backfire, but that’s very rare for myself. On the other hand, Lightbender is more potent as it packs a stronger body and an AOE (as opposed to single target) Dispel, so it wrecks Cassy, Songhai, Lyonar & Vets.
Also, I like Silhouette Tracer over Incinera because 1. Tracer is 1 mana cheaper; 2. Tracer has 1+ range over Incinera; 3. you have greater degree of freedom and versatility with Tracer (get yourself out of Provoke range; teleport after attack); 4. the minions in the deck is so weak that I can’t afford a backline value generator (Kelaino, Incinera, Zephyr and likewise) and 5. most of the time, I only need the increased mobility for 1 turn only, so no need to get Incinera over Tracer.
I include quite an amount of “casual” minions, like Azure Herald and Primus Fist, to end my games quicker. My 2-drop list is: 2 Pax, 2 Fists, and 2:3 Mystic-Herald (or the other way around, can’t remember too well). Herald is actually terrific with First Wish, as you get a 5 health body.
I didn’t run decay nor CoD. Decay is too clunky, and CoD is too slow. I didn’t run Rasha’s because there wasn’t much artifacts in the meta when I was active in this game, and Bone Swarm is kinda a replacement for Rashas. Maybe the current state of the game is slow enough for CoD, and there are enough artifacts to justify Rasha’s.
I’d shave of 1 dispel, 1 Pax, 1+ Rasha’s ,and maaaybe 1 Zephyr and 1 mobility (not sure about the latter two), but that’s just personal preference. You can fill in the remaining spaces with staple minions like Azure Herald, Scorn, or Dancing Blades .etc. Bringing in some 1-off surprises (Nimbus and Bone Swarm for me) actually worked quite well for me.
Oh and also CARD DRAW. I used to run L’Kian only because I had no other options. L’Kian is clunky because you can’t play her when you have a fulll hand, and you won’t draw into her when you are running out of steam. Now that I’ve crafted Spelljammer, but I can’t really say Jammer is superior because Jammer doesn’t draw as “fast” as L’Kian. I don’t like Sojourner because I don’t want to bear the risk of getting my card draw cucked by dispels, but still, you can go Stalin style (running so many dispel-demanding targets that your opponent runs out of dispels) with Soj. Lastly, Divine Spark/ Astral Flood in 2017 LUL
Again I’m only a mid-low Diamond dwelling skrub AND I’m not too up-to-date with the current (post RotB) meta, so my opinion may not worth much.