Below is a short video showing how he does it: Lunumbra prefers not to paint old or rare cards as he does not want to, as he says, deteriorate their value. Via Lunumbras Facebook and Instagram, have a look at his work: Terrific work
Firstly, Snorlax VMAX works wonderfully with normal energy cards
Lava Hound is the main tank, Balloon is the high damage dealer, Fireball is a damage spell, Skeleton Dragon provides support to troops dealing splash damage, Mega Minion provides air support, Tombstone is a defense building to slow enemies, Guards are the troops providing defense, and Zap is a spell to reset the enemy
Amazon Huge selection and fast shipping, but pricing can be volatile
Some designs are born to capture the top-down flavor of a card
So whats the deal with his Imp