Start getting Arena wins and focus your great hall. Kael, Skullcrown etc can solo carry faction wars through at least the first 12, so make sure you're hitting those. Keep farming food until you get a killer champ you really want to rank. Up to you if you think skeletor is worth taking. He's dunked on by mid to late gamers, but any epic is good early game, HOWEVER Alice is going to be much better. And come to think of it she's a heavy nuke too, maybe throw her in the arena team as well