101Leafy researched the games.
War Drum

Uses a great deal of Conga fur. The rhythms can cheer the soul and boil the blood.
| Class | Hunting Horn |
|---|---|
| Rarity | 3 |
| Attack | 624 |
| Slots | 1 |
| Price | 1,935z |
Upgrades
| Upgraded from | Ivory Horn |
|---|---|
| Upgrades into | War Drum+ |
Can also be made new at the smithy.
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 732.
Materials
Congalala Pelt ×4, Med Monster Bone ×2, Fire Herb ×5