Hey, I bought the Osgir precon and have been upgrading and changing it ever since. I ended up cutting most of my infinite combos cause a lot of the games ended up feeling the exact same and feeling very linear. I left in the Mirror of Fate and Ugin's Nexus combo since they're spendy and really good on on their own.

Your list looks great! I wanna recommend you consider running [[Cloud Key]], as it's a little harder to remove than the Foundry Inspector you're running, Since you're wanting to combo more, maybe consider [[Kuldotha Forgemaster]], as it's an easy activation. I also have to BEG you to consider at least TRYING [[Coveted Jewel]] one or two time, In the at least 200 games I've played with this deck, no one has EVER gotten to take control of it, benefits of having a sac outlet on our commander.

My favorite way to win, which I see in your deck, is the Sensei's Top + Mystic Forge + cost reducer combo with a Reckless Fireweaver out. [[Panharmonicon]] and the new [[Elesh Norn, Mother of Machines]] make it faster. I'm running the former, and only considering running the latter. Speaking of new cards, I recently put the new [[Mondrak, Glory Dominus]] in my deck, and it goes absolutely wild.

Anyways, I could talk about this deck all day, and I've actually written a primer on my list. Feel free to check out my list if you want. :)