There is loads of cool art for Hearthstone cards. Seeing them up close gives you a better appreciation for the design work that goes into the cards.
Here is a Hearthstone Dr Boom Wallpaper Art that you can use as your desktop background. If you’re a HS player you will know all too well how much Dr Boom ran riot on the ladder. OP card that is now banished to Wild format, but still, he looked like a boss.
Just click on the image for the full-size image.