101Leafy researched the games.
Pulsating Core

An unused item of antiquity, its core pulses as if the weapon were alive.
| Class | Hammer |
|---|---|
| Rarity | 7 |
| Attack | 1040 |
| Affinity | -20% |
| Slots | 2 |
| Price | 60,000z |
Upgrades
| Upgraded from | Weathered Hammer |
|---|---|
| Upgrades into | Pulse Crusher Core |
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 726.