Ancient Weapon Poseidon (OP11-037) sells for $0.16 on TCGplayer (market price, Oct 25, 2026). A Green event card from OP11 in the One Piece card game — rarity UC, cost 1.
$0.16TCGplayer market priceFrom $0.01 · 613 listings · as of Oct 25, 2026
[Main] Look at 4 cards from the top of your deck; reveal up to 1 {Neptunian} or {Fish-Man Island} type Character card and add it to your hand. Then, place the rest at the bottom of your deck in any order.