Industrialization - $6
Project
At the start of your turn, gain an Action card to your hand.
Do not discard your hand or draw cards during Clean-up.
Clarification: This only effects the standard draw of 5 cards; if you mange to play a card with +Cards during Clean-up, you will still get those.
My brain hurts. Can someone please explain how you'd play with this?
Good question, it sounds like it drastically changes the game... If there's e.g. a Lab in the kingdom, you can always gain one and hopefully draw into something useful, until the pile empties. Otherwise, you always need to keep some good Actions in hand unplayed for your next turn.
You can keep any dead cards, Coppers etc. in your hand forever, so trashing is completely unnecessary (except for getting rid of curses' -1VP), and you can green immediately without bloating your deck. So Industrialization is basically a Donate/super Exiler with a big advantage and an even huger disadvantage added. I suppose it can be viable when there's good engine support in the kingdom except for the trashing. Or you could buy only two Gold and a Silver and gain a Hunting Grounds to buy a Province each turn, until the Hunting Grounds pile empties.
With KC and Bridge in the kingdom, you can empty the Provinces at most five turns after buying Industrialization.