It's the one most likely to be Rule zero'd into actual gameplay, since nothing it's doing is offensive
The best case for this is off a Sneak Attack where you deal 10 and gain 5, nice but only have the job and no lasting value or disruption
This can come in handy with creatures like Orcish Bowmasters
While it's certainly possible to get lucky and double your money with a box of Masters 25 even at current box prices, which are around $180$190if your goal is to build a Modern collection, you're probably better off spending your money on newly cheap Thalias, Eidolon of the Great Revels, Blood Moons, Utopia Sprawls, and the like
Similarly, creatures that enter the battlefield attacking later in combat won't be considered when determining whether or not a creature attacked alone
Where do the assassins from ACR and Marvel Super Heroes rank as commanders, compared to the rest of the Magic meta