My cards can add their own attributes

Labels of this book: [Card Battle], [Collection], [Unlimited Flow]
Chen Mo woke up and found himself in a parallel world...
"Welcome the host to the world of card masters, get a novice card pack * 10, a chance to extract talent."
"I don't know how to play Hearthstone, what should I do, wait online, I'm in a hurry."
Um?The talent I drew seems to be over [-] million points strong?
Talent: Idle upgrade
[Your card has been placed for 24h, attack +3]
[Your card has mutated because you have been idle for a long time]
[Your card is dissatisfied with your idleness and upgraded to a green card]
............
It can become stronger by placing it. When other card masters are still fighting plots in different small worlds, upgrading their cards, and putting together a set of cards, Chen Mo is thinking about which set of cards to idle today?
This book is also known as "You Never Know How Many Decks I Have", "My Cards Are Different From Others", "Cards, I Don't Want to Work Hard"...
Book Friends Group: 829578831

Novel keywords: My cards can add their own attributes without a pop-up window, my cards can add their own attributes