This is dumb. It does nothing, except when you have a single other card and OTK your opponent

And there are a lot of options for that one other card.

I could see a version of this with a lower cost and reasonable number that fuels a whole lot of abilities: Convoke, crew, devour, Equipment/Auras that grant activated abilities, alliance, aristocrats plus morbid, enlist. You could build a whole environment around ways to make use of Cowards.

On the flip side - it's a 9 mana card that doesn't acually win the game, and unless it actually pairs with your finisher is a dead card.

And yet, because when it does do something, that pairing is always going to be a win, it can't really cost much less.

How about making it cheaper (maybe 5 or 6), and have it create a slightly smaller pile of 0/1 soldiers? Say 20? It would still be a fun finisher for cards that consume tokens, but would also have utility in normal decks as ablatative armour and of course oriflamme etc.

Now it's interesting instead of broken. Hard to call it ablative armor since they can't block, though