101Leafy researched the games.
Phantom Mirage

Chameleos-like invisible sword. Good for hit jobs. Requires Guild's OK to own.
| Class | Long Sword |
|---|---|
| Rarity | 10 |
| Attack | 1344 |
| Affinity | 20% |
| Defense | +10 |
| Slots | 1 |
| Price | 130,000z |
Upgrades
| Upgraded from | Mirage Finsword+ |
|---|
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.