If you can find it cheap, the Targaryen warship set comes with a separately bagged head and helmet of a soldier, so you could conceivably end up with three if you have an extra Jon Snow laying about.
To this end, I've seen several local Ollie's stores carrying the GKG96 Battle Beyond the Wall set for $9.99, so you could pick up an extra Snow and a pair of baddies on the cheap.
