I've got Brax, Lord Dredmor and the Lutefisk Cube, if you want them. TheKirkUnited below has a Inconsequentia card left over. I already finished my badges, and I'd rather give my surplus away to people that are fan enough to join the forums, than sell them on the Steam Market for pennies. EDIT: wasn't sure where to post this, sorry if it's all wrong
These are the steam cards, right? Is there a specific way you earn them? Or do they just come with play time?
Yes, they're the Steam cards. And you get a number of them (three, IIRC) via play time within Dredmor. The others you have to buy or trade for.
at very rare times you get a so-called booster pack with another 3 cards, but I've only ever got one of those
To be eligible for a booster pack you need to have exhausted the card drops for a title (so if you have five games with cards, and you've got all the drops for two of them, only two will be eligible for booster packs). And they aren't common. You need a high Steam level to get them with any semi-regularity, I believe.