This is somethin' I brewed up and think might have some promise, especially with Yahenni's Expertise on the way.

The nut draw is to fire off a turn 2 Gather the Pack or Contingency Plan , filling up the yard with your enablers (Ulamog, Silumgar, Aven Sunstriker and Aerial Responder) into a turn 3 Soulflayer potentially landing it with hexproof, indestructible, flying, double strike, and lifelink or any combination thereof.

The sideboard is mostly guesswork and ways to deal with control decks.

This deck struggles against

I have yet to go against a Tormod's Crypt out of the opponents sideboard. I'm not sure if it completely hoses the deck since you are always just 1 Pack or Plan away from a 2 drop Souffle or a +/- 3 Cruise

As for Yahenni's Expertise, depending on the meta this card may warrant a slot in the main deck and certainly one in the sideboard. I just considered while writing this that it is a non-bo with Painful Truths so that may cement Oath's slot in the deck.

Please suggest any cards I might have missed or not considered.