Hey i love the deck, but i'm curious is there any reason to run Karn, Silver Golem over Karn, the Great Creator . Isn't greator better because he can do both golem's and Null Rod effects

Og Karn is instant. It was a tough choice, but I prefer an instant answer to artifact ramp.

Ah, that makes sense. As far as tutors would Beseech the Queen be better than scheming, at least until grim or seal.

I ran Beseech for awhile. I removed it because of the reveal requirement. I would prefer a top deck tutor anything over a reveal to hand tutor. Working at 3 or less cmc is fine in this deck. It's the reveal that kills me. If I grab my Doomsday with it for a turn 4 win, the table will hold a counter for me vs the person who is developing their board to win next turn. Giving somebody a tutor is also not a problem, that early, usually.