Legendary Atlantean Tridon is a Common Effect Monster card from Yu-Gi-Oh! (2014 Mega-Tin Mega Pack, MP14). Current market price: $0.21.
Common
2014 Mega-Tin Mega Pack (MP14)
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.
