Oh this is very good.
I can tell that perhaps you draw dragons more than anything else. I am a dragon lover, myself, I have drawn many when I was in school, hat and skulls, my two favorite things aside form women lol. Eventually I included them into my work as well.
But poker, I never thought of that before, Dragons and power somehow seem fitting, with dragons being classically thought of as crafty and calculating creatures. Its only natural they would be a kind of card shark. Er, dragon.
The art stands for itself, the color choices are nice, overall design is simple yet detailed enough to convey what is needed for the message. I like the details on the dragon very much.
This would look great for a tshirt, Perhaps consider it.
Nice work indeed. One of my favorites of yours.