As far as Im aware, theres no super obvious combo ready to go with Emrakul, but we know people will keep trying for it
Sea Gate Oracle The Oracle is a perfect filler card, it is far from overly powerful yet I play it lots because I feel it greatly reduces the element of chance in my games
For the incredibly low cost of two mana, Sygg's two-mana activated ability can provide target Merfolk you control with protection from a color of your choice until the end of the turn
Wildfire + Burning of Xinye Wildfire and Burning of Xinye are cards you can build a deck around, especially in formats like Cube
You also gain life equal to the number of creatures
From Elesh Norn, Grand Cenobites master scheming and manipulation to Vorinclex, Monstrous Raiders primal strength, these cards really cover the bases when it comes to otherworldly dangers