Have gone through many iterations of this since the last time I updated this deck. I've finally pulled away from running Flamestokers main deck as the main wincon and just want to go for an Ixtun control build that's just plain good. I still think Flamestoker is good enough to run in the Market to play against certain other control decks. Calderan Cradle is interesting ever since it got it's cost reduced to 3. It's got synergy with Xo and Howling Peak in particular.
Very limited testing so far, but it's starting to show promise. I think the next iteration will be something closer to what Magnnarot did with their Ixtun Control ECQ list (Jotun Hurlers, Second Sight over Wisdom since it's easier to cast and abuses Fate, maybe Saviour of the Meek but I'm hesitant on that one lol). I think Cradle has a ton of potential with that kind of shell.
EDIT: Cradle is still too slow even with the shells I mentioned. I think it's safe to say it will never be good until post rotation/several more sets