I made some changes to the list today that involved more control creatures but am still iffy on whether I like Frost Titan, vorinclex, and terastodon in the deck as opposed to snapcaster mage and more tutors that fuel the combo instead of the goodstuff control base.

What do you normally grab with tooth and nail?

Depends on game state. Normally I have a threat creature in my hand and I can grab seedborn muse and teferi and then start to flash in creatures in upkeeps and endsteps as the table wheels. If I already have one of those, I go get Consecrated Sphinx and normally never lose because I bury people in card advantage by drawing all the counterspells and untapping lands until I can get to a crazy amount of mana or creature power and run them over with wurmcoil copies or villaninous wealth for about 30.