The World Where Magic Cards Exist

What kind of existence are cards? I don't know or understand what others think, but for me it is a kind of psychological comfort... One day it will realize the meaning of its existence, but I have no idea. Maybe it will shine again in the distant future. I have a real magic card that has magical power. Unfortunately, magic cards are not the only ones, anyone with strong willpower can obtain them. In this world where magic cards exist, I am still searching for the meaning of its existence... And the meaning of myself left in my memory.