Demon deck is great for doing big damage. Been a while since I played so I can't remember the name of it, but one of them can do 250 - 500 damage. And some scale with your missing health. So if you have a card that boost your health to 2000 and then use one that buffs your dmg for the cost of health you can do 1000+ dmg sometimes! Just get all the demon cards and mess with 'em a bit. They're crazy stronk.