In my meta, I generally try to Terastodon the combo/control player before turn four (to blow up three blue sources) in order to give myself a chance to win. Or bring in Omniscience before turn four or five to be able to win against the control player before they can get off the ground. It's a little cutthroat, but I just run threats, no true control, so I'm at a disadvantage against the combo player if I let them live or proceed with any land/permanents past turn five or six or so.

But about the deck, Sphinx of Uthuun is powerful with Deadeye Navigator , as I'm sure you've considered. If there was a way to get the interaction online sooner than t7, that might be useful, but I understand why you dropped it. I'm looking forward to seeing what new edh stuff rtr will provide.

One more thing: I've replaced some of the creatures that you mentioned were underpowered/unnecessary with (hopefully better ones, but I'm still just holding a place with Kaervek the Merciless . Would you suggest a specific creature to replace this one? Maybe Iona, Shield of Emeria ? Not quite sure currently :-(

I never ran Sphinx of Uthuun to begin with. The cost and speed are simply too prohibitive to make it viable.

What is the last part of your comment in regards to?

Oh sorry! I meant that you're not using it in general but that if it were a little more affordable the pairing would be awesome. And I meant for my deck, Think Fast! Bombs for Free. Definitely forgot to post that, oops! I'm really looking for the last few card spots to be optimized. Thinking about taking out Deathrender or another slow-ish card for my incoming Eureka as well.