101Leafy researched the games.
Saber

Dragon Blade with the power of Lunastra. Opponents will immolate in a blue blaze.
| Class | Long Sword |
|---|---|
| Rarity | 5 |
| Attack | 720 |
| Fire | 350 |
| Slots | 0 |
| Price | 5,600z |
Upgrades
| Upgraded from | Iron Katana "Gospel" |
|---|---|
| Upgrades into | Lion Dance Saber |
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 692.
Materials
Lunastra Mane ×1, Lunastra Horn ×2, Lunastra Shell ×4, Commendation ×2