101Leafy researched the games.
Devta Serpentblade

Poisoned Lance made from Remobras material. Made to cause pain and suffering.
| Class | Lance |
|---|---|
| Rarity | 6 |
| Attack | 368 |
| Poison | 450 |
| Affinity | 10% |
| Slots | 0 |
| Price | 50,000z |
Upgrades
| Upgraded from | Naag Serpentblade |
|---|---|
| Upgrades into | OuroborosSerpntblade |
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 746.