Dockside Extortionist is a mythic Creature — Goblin Pirate card from The List (PLST), collector number 2X2-107. Current market price: $10.63, TCGplayer market prices via Scryfall.
When this creature enters, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this token: Add one mana of any color.")