The popular card game "Yu-Gi-Oh!" features a set of creatures called "harpies," which specialize in rapid summoning and working cohesively to protect each other. Consequently, it can be difficult for many players to defeat such a fast and synergistic deck. As with most decks, however, harpie decks have several weaknesses that can be exploited to a player's advantage, turning a hopeless fight into an inevitable victory.