Emmy, the Eons Torn

And if you decide it can be countered, you don't get an extra turn, and it loses annihilator. AKA make it cost efficient but not banworthy

Oh or if you can convince the council to take it off the ban list. Good luck~

15/15 flyer with protection from colored spells and when it is put into your graveyard it shuffles your graveyard back into your deck is still efficient.

[Edit2]: As a 15/15 flying creature with pro colored spells you've got a massive creature who's still quite difficult to deal with esp since you have to exile it with a Fiend Hunter type effect. Keep in mind some decks cannot deal with him no matter what because of colors. Also DONT EVEN GO FOR THEN THEY SHOULDNT PLAY THOSE COLORS. Just don't.


[Edit]: Emrakul does too much and is toxic to gameplay. He just creates undesirable game situations. The problem with him is the fact that once he hits the field the only way to remove him is O-Ring type effects, or creatures that exile/kill it. Now the fact he gives an extra turn means if he has haste for any reason you've now got 30 damage for 15 mana or at least have removed 12 permanents from someone's field. On top of all this, he's a flyer. There are very few ways to deal with a 15/15 flyer, and trying to block it is still painful as he's colorless and not an artifact. The Eldrazi in general are not fun game mechanics, they're just OP. Fortunately all of them are counterable except Emrakul. There are very few ways to deal with Emrakul, and especially in an EDH format you don't want to build your whole deck or at least a significant portion of your deck around dealing with a single card in your opponents deck otherwise you lose.

It is. Talrand, favorable winds, Gravity Shift, etc. OP AS HELL.