Depends what leader you want to main. But with pretty much every deck you will need a chopper/jackrabbit for energy grab. Most decks consist of basic units like hunters/cyclops, elite rangers/snipers/hellbringers, reavers/wolverines and engineer/nightingales. You'll also want to make your deck as versatile as possible to deal with different leaders. Top 5 leaders right now I would say are Ship, Atriox, Kisano, Jerome and Johnson. either one of those leaders would be a good choice to use. I mainly use shipmaster just for his spirit assault. Ill give you the deck I use for him. Most of the cards in this deck are cards you're gonna want to put in pretty any banish leader.
jump pack brute
locust or bloodfuel