Though 'legal' is a very loose term in Age of Sigmar. The only restriction for most units is a minimum unit size, though I would have no problem with people truly fielding whatever they like. For example, for daemons we house ruled the minimum size for troop-type units (Plaguebearers, Bloodletters, etc.) to be their power's sacred number rather than ten, though they can't field standards or musicians unless they are at least ten models strong.
More horror on the way - I am perversely enjoying painting these tortured models.
