Have you seen the fortress battle Chariots, whatever they're called?

They're not little playthings, I'll tell you. A Cannonball would wipe them out quite nicely, though! What do you say?

Buy

You look like you could use a Cannonball on the battlefield, Daeva. But tough luck! I can't help you unless you're in control of this fortress.

"I'll find some Cannonballs elsewhere, then."