"Greed" (強欲Gōyoku) is series of cards whose effects revolve around drawing 1 or more cards from the player's Deck. All the cards in this series are based on "Pot of Greed", which lets the player draw 2 cards from their Deck; "Pot of Greed" appears in many of the cards' artworks. Other cards change this effect by increasing or decreasing the number of cards drawn or letting the opponent draw cards instead.
While the card-drawing aspect is similar, this series is unrelated to "Treasure Cards".
The storyline of "Goblin of Greed" can be seen in the artwork of the following cards: