BTW, will you be adding this to Dominion: Enterprise?
Maaaaybe? I honestly haven't decided. Why do you ask?
Wait, Enterprise's theme is one-shot, right? Maybe you could have it draw a card beforehand so you can get up to +$5, and have it trash itself
Wait that seems a bit weak... maybe have if trash instead of discard for benefit. So, +1 card, trash any number of cards, +$1 per card trashed, yeah this? Well that gets really bad in the late game... maybe make it just a solid +$5, take off the bonus +1 card, trash any number of cards from your hand, if you don't trash any cards, trash this.
Hmm that seems just a bit too powerful now... Could add an on-gain penalty that isn't actually that bad of a penalty considering the effect of the card... gain a curse? No, too weak, but 2 curses is too steep...2 ruins could work... Yeah let's make this a looter! +$5, trash any number of cards from your hand, if you don't trash this, when you gain this, gain 2 ruins.
Well that's still too good, because I mean +$5 on a $3 card is really good. Let's up the price to $4, and instead make the trashing a penalty. What penalty though... trash a treasure, no... trash an action could work with the on-gain penalty. I got it!
Auction
$4 Action-Looter
+$5
You may trash an action card from your hand. If you don't, trash this.
--
When you gain this, gain two Ruins.
...wait...