Poseidon Wave is a Common Trap Card card from Yu-Gi-Oh! (Realm of the Sea Emperor Structure Deck, SDRE). Current market price: $0.21.
Common
Realm of the Sea Emperor Structure Deck (SDRE)
Card Text
When an opponent's monster declares an attack: Target the attacking monster; negate the attack, and if you do, inflict 800 damage to your opponent for each Fish, Sea Serpent, or Aqua-Type monster you control.
