Book of Battle Cards

Qin Yang was browsing a worn-out black book at a used bookstall, but accidentally traveled to an underground world and became a dark elf! And the black book in his hand turned out to be a book of battle cards. I drew the epic card "Miss Holy Shield"! The strongest defensive card! I drew the epic card "Miss Holy Spear"! Trigger the bond "Rose Gemini", and the attributes of "Rose Gemini" will be increased by 100%! Three "Goblin Marauders" were drawn! What? You said you can also fuse and rise to the stars? This is a story about relying on cards to fight against powerful tyrants from all sides and traverse the underground world...