The tzeentch band contains a sorcerer of tzeentch with a big feather cape, a tzaangor with greatsword, an acolyte with sword and shield, an acolyte with just sword, a blue horror, and a pair of brimstone horrors on a base.
The goblin band has a shaman with lantern and staff, a fanatic, a netter, an armoured goblin with a branding pole, 3 bow grots and 2 squigs. That's right, 9 guys. I suspect the branding guy controls squigs in a way to maximise actions
There's a blue horror which splits into a brimstone pair. So assuming the blue doesn't need summoning first the band starts with 5 on the board
Just checked. Summoning is an action for the sorc. If no blue or brimstone are on board he can use an action to summon a blue