Legendary Atlantean Tridon is a Common Effect Monster card from Yu-Gi-Oh! (Lord of the Tachyon Galaxy, LTGY). Current market price: $0.21.
Common
Lord of the Tachyon Galaxy (LTGY)
Card Text
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.
