Boggs Rule Clarifications: People were debating on if you could use this whenever you’re paying a cost just to get the ammo counter…

Hmm. That’s a weird interaction but yeah, I think that works. You can use resource abilities during cost windows, and although this won’t generate a resource, it will give you that ammo counter. Importantly, that can change the game state, which really dictates whether a card can or cannot be used. It totally works. – Boggs (Facebook)