What Does It Mean That My Card Ability Is Random Every Day?

In this world, everyone at the age of eighteen will independently obtain a card, which will give them an ability. Cards are divided into opportunity and destiny, and the colors correspond to black, red and platinum. Chance cards mostly have the ability to damage the enemy by one thousand and damage yourself by eight hundred. Destiny cards will only strengthen themselves. So in this world, everyone is eager to get platinum cards and scorns black and red cards. But Li Yanhen's card is extremely special. It was a card of different colors, black, red and white gold. Its ability is - random. ………… "What exactly is Li Yanhen's ability?" "Check it out for me. You have to dig three feet into the ground to find out what his ability is." "I really beg you, Brother Hen, what is your ability? Just tell me." Hearing these questions, Li Yanhen just smiled slightly: "Sorry, I don't know either."