Collector
Types: Action
Cost: $4
+1 Action
You may play a Treasure card from your hand.
Draw until you have 4 cards in hand.
Each other player may discard a card.
I really like this card. I tend to like draw-to-X cards in general, and this one seems to be balanced and interesting. Letting the opponent discard opens up interesting interactions, especially if you play multiples, but it isn't good enough for your opponent to make it underpowered.
Consortium
Types: Action
Cost: $7
+2 Actions
Choose a number up to 8. Each player may draw until they have that many cards in hand. Choose a number down to 3. Each player who drew discards down to that many cards in hand.
I'm not a fan of this card; it seems a bit too expensive for what it does, and I think it would bring a bit too much AP with not enough benefit to make it worth it.
Divdends
Types: Treasure
Cost: $7
Worth $1
When you play this, gain a Treasure costing less than it, putting it into your hand.
I agree with those who say this seems a bit powerful. Also, we already had a Treasure as the winner of the last contest, and I'd like to see something different. I like the card idea, though.
Investor
Types: Action
Cost: $5
+1 Action
Discard any number of Treasure cards. For each card discarded, +1 Card and +$1.
I like this card. It seems pretty balanced and useful in general. It compares well (but not too well) with Bank if you've drawn your deck, and it's like a Bank plus Cellar if you haven't, but the fact that it can only discard Treasures keeps it from being overpowered.
Minister
Types: Action
Cost: $6
All cards cost $1 less this turn, but not less than $0.
You may gain a card costing up to $4. If you do, each other player gets +1 VP.
This seems interesting, but I still think it's a bit weak. You need to play 4 in a turn to gain Provinces, and if you use it for engine parts your opponents get a bonus that stacks very well for them.
Proliferate
Types: Action
Cost: $7
Gain a card costing $3, a card costing $4, a card costing $5 and a card costing $6.
Clarification: Cards are gained one at a time in the order given. If there are no $4 cards, you still gain the other three cards.
This seems okay, but I don't really like how quickly it empties multiple piles, and I don't like having to gain unwanted cards with my good ones either.