The ideal strategy with this card seems to be to buy lots of silvers and coppers, and nothing else. Other action cards (which cost a fair bit of money) really gum up the deck. Also duchies are probably a bad move. I can't really see this idea gelling well with any other kingdom card.
If you're looking for a terminal drawer, you could bring your old "surveyor" idea back.
Surveyor
Action - $6
+3 Cards
(You may?) discard a card from your hand. If it isn't a Victory card, gain a copy of it.
Discarding treasures has an opportunity cost, and cloning actions is all well and good but as a terminal drawer you need to know what you're doing, because it may end up just being more actions you can draw dead.
Why $6? Well being able to discard a Gold to gain another is quite good, so this card is in direct competition with Gold itself. It also means that when you buy it you're more likely to have some cards that it can work with. Plus it seems kind of strong - the problem with the original Surveyor is that it never seemed worth buying, but being a Smithy with a pretty good gaining option seems like a "power" card. It's worth trying at $5 as well.
If you're short a +buy this card, as a gainer, will probably make up for it, or you could even give it a +buy, but it will seem tacked on.
