101Leafy researched the games.
Matenro

An unused item of antiquity. It could surely strike into the heart of heaven.
| Class | Lance |
|---|---|
| Rarity | 7 |
| Attack | 483 |
| Affinity | -20% |
| Slots | 2 |
| Price | 60,000z |
Upgrades
| Upgraded from | Weathered Spear |
|---|---|
| Upgrades into | Sky Scraper |
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 752.