| Set: |
Structure Deck: Realm of the Sea Emperor |
| Card type: |
Effect Monster |
| Rarity: |
Ultra Rare |
| Attack: |
2800 |
| Defense: |
1600 |
You can Tribute 3 Level 3 or lower WATER monsters; Special Summon this card from your hand or Graveyard. When you do: Return all Spell and Trap Cards on the field to the hand, and if you do, if 3 or more cards are returned to the hand by this effect, all monsters your opponent currently controls lose 300 ATK for each.
![Poseidra, the Atlantean Dragon [SDRE-EN001] Ultra Rare](http://cardcastergames.com/cdn/shop/files/bf557c70-ed1c-599a-8f1c-30bbfb81baf1_800x.png?v=1718578728)
![Poseidra, the Atlantean Dragon [SDRE-EN001] Ultra Rare](http://cardcastergames.com/cdn/shop/files/bf557c70-ed1c-599a-8f1c-30bbfb81baf1_1024x.png?v=1718578728)
