Because they have the ability to complete valuable sets or runs, high-ranking cards—like Aces and face cards—are frequently sought after. Midielts exam slotsdle-Ranking Cards: Their Underappreciated Value. Because they can act as linkages in runs, filling in the spaces between higher and lower cards, players should also take into account the significance of middle-ranking cards. Rummy Bloc's game-changing cards are called wild cards.