101Leafy researched the games.
SanctionedDrillLance

Technology used on giant drilling tools applied to weaponry. Rock-cutting time!
| Class | Lance |
|---|---|
| Rarity | 9 |
| Attack | 529 |
| Slots | 0 |
| Price | 80,000z |
Upgrades
| Upgraded from | Roaring Wyvern |
|---|---|
| Upgrades into | Gravedigger |
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 744.
Materials
Eltalite Ore ×10, Union Ore ×10, Thunder Sac ×8, Monster Essence ×5