Thorn

Thorn, the Cactus Knight is a traveler NPC that shows up in the Marketplace after you have sold a certain combination of items. Their detailed info can be found under Traveler Gifts in the journal menu.

This traveler can be found in the Grand Library after all their gifts have been collected.

Book
Book 10 "Airships and Air Balloons" can be obtained from this traveler. Books can be found at the Grand Library.

"Whether you're in the bustling streets of an Alexandrian city or vacationing on the relaxing beaches of Deluca, looking up in the sky will always reveal dozens of airships and air balloons. Air travel is used for transporting goods, traveling between kingdoms, and used even for leisure. None of these aircrafts are capable of intercontinental travel, though."

Version History
The following is the recorded version history.
 * v1.01: + Fixed travelers not spawning in marketplace when placed on bridge/pier tiles
 * v0.96: + Added Thorn the Cactus Knight (New Traveler)