otuside side the [purely political] marriage between the tribes of Ashe and Trynd, Sejuanni and her tribe of the Winters Claw Fight for unification of Freljord under her. The current mystery is of Lissandra, and more over, what are Volibear and the Ursine doing about these recent events. Who is this "ice witch"? [im pretty confinced its Lissanrda, especially since her reccomended items were leaked onto PTB a couple weeks ago and shes an AP mage].
Id say that all freljord and demacian champs/factions are fair game. The only clear faction that would have outright hostility with the others is Sejuanni's camp.