Mercenary Captain:
Mobility is a basic skill of all mercenaries. What's really needed in a large-scale battle is striders, of course.
A mercenary company receives striders when it signs a contract with a lord. Then we assigne them to individual mercenaries. If you need one, bring enough badges to prove your skill.
I think 60 should be enough.
"Here it is. I want the Strider of Wind."
"Here it is. I want the Strider of Star."
"Here it is. I want the Strider of Twilight."