101Leafy researched the games.
Death Venom Hammer

A grotesquely monstrous Hammer, utilizing a specially concocted poison.
| Class | Hammer |
|---|---|
| Rarity | 7 |
| Attack | 936 |
| Poison | 350 |
| Affinity | 5% |
| Slots | 1 |
| Price | 60,000z |
Upgrades
| Upgraded from | Venom Monster |
|---|---|
| Upgrades into | Purple Mace |
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 724.