My take on a Ixtun Midrange list building on the renown mechanic.
The deck is definitely not perfect yet, but it doesn't seem too bad since you have a pretty good match up vs both aggro and control and a decent one vs mid range.
Most cards should be pretty self explanatory, that being said some of the more surprising ones might include
Imperial Loyalist,
Svetya, Orene of Kosul and
Augmented Form.
Imperial Loyalist might seem like a bad card since it's a 4 drop dying to torch, but the upsides are pretty huge as well.
Imperial Loyalist gives us access to fetching a merchant or an Hojan with Dispaly, or quinn and aniyah with an augmented form. Svetya was a filler card since i wanted to run one more unit at least, and the synergy with being able to fetch her via an imperial loyalist can come in pretty handy when you're closing out games. 4 Augmented Form might be a bit too many since we are'mt running any strategize, but it still a pretty good card with great synergy with every unit in the list.
The market is a pretty normal rakano market. Bore is nice against Permafrost and can come in handy against the combrei decks running all the big boy relics. Urn is in there against Haunted Highway since that's one of the worst match ups, it can be decent vs other aggro decks as well, but most of the time you're better off getting a rule. Plate has the obvious synergy of merchant and renown, and lastly peak is great in slower match ups since it can generate some insane values.