I played last night and I still think Zigil Miner can be super powerful, especially when combo'ed with Stargazer or Gildor. When using 3 copies of unique cards that you want out fast, like Vilinor, Asfaloth, Vilya etc, Miner can plow those extras out of your deck once you have them already. He can sift the deck and give one or two resources a turn doing so. If you take one Miner, Beravor, and your standard draw, that is going through five cards a turn. You might not have them all in your hand but the cards you need are there, most likely with enough resources to pay for them.
I find this to be pretty nice.