What would your special unit be able to do?

[CombatEX]

Ah yea. I forgot about blocking the opponent's spawn! That would be very annoying to deal with. We could take Necrocat's suggestion though and just make that an illegal move. If we want to be precise though, it's not the same as the bombshell's limitation. The bombshell can't fire on its own spawn, but it can fire on the opponent's. Speaking of that bombshell quirk though, it definitely seems like a bug (or rather, oversight), not an intended feature.