What Is Your Birth Card? Enter your birthday (MM/DD/YYYY) Find Out Four of Spades Birth Card Out of all birthday, Four (4) are among the most fortunate. It gives them a wonderful start — with protection, security, sufficiency, but like with any other card how we use our potential is what creates our success in life. Four of Spades are builders and foundation of Wisdom. Four is also a number of the Emperor. Fours must be in command of every situation that arises.