You can Tribute this card and 1 Sea Serpent-Type monster; Special Summon 1 "Poseidra, the Atlantean Dragon" from your hand or Deck, then all monsters your opponent currently controls lose 300 ATK.
| Detail | Value |
|---|---|
| Card Type | Effect Monster |
| Attribute | WATER |
| Level | 3 |
| ATK | 1600 |
| DEF | 800 |
| Race | Sea Serpent |
| Archetype | Atlantean |