Primeval titan from m10 should be a good addition to this deck. It helps out towards letting you hardcast your fatties if you happen to be without a summoning trap.

Creatures (23)
4 Noble Hierarch
4 Lotus Cobra
4 Knight of the Reliquary
2 Sphinx of the Steel Wind (prob switch for Baneslayer)
2 Iona, Shield of Emeria
2 Pelakka Wurm
2 Emrakul, the Aeons Torn
3 Wall of Omens

Spells (14)
2 Jace the Mind Sculptor (borrowed from my friend Dave – thanks Dave! – only saw it once the entire night, I want 3 or 4 maybe)
2 See Beyond (prob switch for trapmaker’s snare, I wished I had a summoning trap more than I wanted to put fatties back into my deck as I could eventually hardcast)
3 Realms Uncharted (thins the deck for better % chance of pulling something relevant with summoning trap, makes KoR huge)
3 Harrow (same as above but better interaction with lotus cobra)
4 Summoning Trap

Lands (23)
4 Misty Rainforest
2 Marsh Flats
2 Verdant Catacombs
6 Forest
3 Island
2 Plains
1 Sejiri Steppe
1 Swamp (Likely will become Bojuka Bog)
1 Terramorphic Expanse (split with evolving wilds for better realms uncharted)
1 Evolving Wilds

I forget what I put together for a sideboard, because I made the deck literally 5 minutes before we were going to start play (I saw there was another guy playing Naya Allies and I have this almost obsessive compulsive thing about being different), but it included 4-of negate, a singleton bojuka bog, and some combo of o-ring, terastodon, journey to nowhere, flashfreeze, wall of reverence. I think 2 additional Iona should be in there, more terastodon instead of journey, more o-ring instead of flashfreeze.

Notes -
Iona is really, really good. I should have 2 in the board.
Sphinx is awkward to have and hard to hardcast, probably board it and put Baneslayer (I buckled and got two, my bank account does not thank me) or Terastodon in its place for removal
Terastodon is sick and can be hardcast easily (well, more easily than sphinx, iona, or emrakul). What would you rather your opponent have, 3 3/3’s you can annihilate or block all day anyway, or his 3 planeswalkers?
Small amount of basics can be problematic if they get spreading seas’d
I am wondering if negate in the board should be negate in the main, and even if it should be negate at all or some other type of counterspell
I think mulling if you have no ramp is the right call

The annihilator ability is not really helpful if you need to keep Emrakul back to block. I guess you could race, but that’s probably not an option if your opponent has board position.

Iona does a good job of blanking many of your opponent’s best cards. Iona stunts their board development so that you can come back. On the other hand, Emrakul doesn’t keep your opponent from casting spells so they can keep improving their board position.

Plus, I thought of another common way to kill Emrakul, Basilisk Collar and Cunning Sparkmage lol.

Now if Emrakul had lifelink, that would be sick

In Polymorph, I’m still leaning towards Iona in the main. Emrakul could be a good sideboard card though. Possibly against decks with multiple colors to deal with Iona.