Black swan

NPC:Captain Gosta
Reward:Bills that can be used to purchase various materials
"1. First, talk to Captain Gosta at the western gate of Heine. He will give you the 'Order of Gosta'.

2. Go to Field of Silence and hunt Tasaba Lizardman (level 36) and Tasaba Lizardman Shaman (level 37). With almost every death they will drop 1-2 'Lizard Fang' and with slightly less frequency 'Barrel of League'.
WARNING: There are two types of each monster, but they are only social to their type; for example, a Tasaba Lizardman Shaman of the second type standing nearby will not react to an attack by a Tasaba Lizardman of the first type.

3. Return to Heine with any amount of 'Lizard Fang' and/or 'Barrel of League' and talk to Iason Heine at the Warehouse.
He will give you some adena for Lizard Fangs depending on the number of fangs per delivery (more fangs = more adena per fang). He will also exchange 'Barrel of League' for 'Bill of Iason Heine' at a 1:1 rate.
These receipts can be exchanged for various materials at Head Blacksmith Roman

1. Bill = 700 Adena
3 Bills = Animal Skin
3 Bills = Animal Bone
2 Bills = 10 Coal
2 Bills = 10 Charcoal
3 Bills = 2 Coarse Bone Powder
3 Bills = 1 Oriharukon Ore
3 Bills = 1 Stone of Purity
5 Bills = 1 Metal Hardener
5 Bills = 6 Cokes
6 Bills = 1 Crafted Leather + 210 Adena
7 Bills = 1 Synthetic Cokes + 280 Adena
9 Bills = 1 Varnish of Purity + 630 Adena
9 Bills = 10 Leather