101Leafy researched the games.
Eternal Schism

Made from the mysterious last technological remains of an Ancient culture.
| Class | Dual Blades |
|---|---|
| Rarity | 7 |
| Attack | 182 |
| Dragon | 480 |
| Affinity | -20% |
| Slots | 1 |
| Price | 60,000z |
Upgrades
| Upgraded from | Weathered Blades |
|---|---|
| Upgrades into | Eternal Sacrifice |
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 716.