Legendary Atlantean Tridon
Card Number: CR05-AE103
Card Type: Effect
Level: 3
Rarity: N
Attribute: Water
Types: Sea Serpent
ATK: 1600
DEF: 800

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.