Need help with tooth and nail deck?

I suggest dropping blue all together. Kiki-Jiki does not and cannot target Emrakul (Emrakul is Legendary and KJ cannot target Legendary creatures) so you should add Brightsteel Colossus instead. You need cards like Lanowar Elves, Birds of Paradise, and Cultivate for mana acceleration. If you add black instead of blue you can use cards like Kokusho to beat your opponent down.