Noccus, happy to hear you had fun with. It is fun to play type of deck that really changes up some strategy.
The Ancient Mathom, should probably be included for the card draw, and in a few games I replaced the Hidden Cache with it, since once Zigil/stargazer is set up the extra resources from the cache are really not needed. I liked the cache in the deck for the effect of pulling off the trick of using it, but getting a few more cards in hand probably out weighs the few resources. Maybe 2 Mathom and a 1 cache will do.
Thanks for the feedback.