Apologies if this has been done before.
People make fun of scout. It takes up a card in your hand, requires $4 and a buy, and maybe lets you grab a few (mostly) useless green cards in your hand.
But what if it were on-gain?
e.g.
Surveyor $4
+$2, +1 Buy
------------
When you gain this, reveal the top 4 cards of your deck. You may put any revealed Victory cards into your hand. Put the other cards on top of your deck in any order.
The top-action doesn't matter (well it does, but not right now).
The key is that this opens up a fewer broader uses:
1) 5/2 openings become potentially 5/5 openings, where one is a Woodcutter (similar to Nomad Camp)
2) Late game while you are greening, you can pull green cards out of your next hand, to keep from stalling (sort of like Mandarin)
3) A bit more shuffle control.
Would something like this be a useful/interesting card?