Thomas Haas is a brilliantly designed card, considering who the character Thomas Haas is, and considering how playing Thomas Haas usually goes:

The corp installs Thomas Haas in a server. Advances him twice. Optimistically, the runner takes the bait and runs the server, paying their way through multiple ice. At the end of the line, the corp rezzes Thomas Haas, uses his Trash ability, and gets back the money back that they paid for him. Is the runner worse off? Maybe, but mostly Thomas Haas was a waste of their time.

Any corp dreaming of some crazy efficient burst of money from Thomas Haas, or dreaming of protecting themselves from Account Siphon by hiding some money on Thomas Haas, or even dreaming of surprising the runner by rezzing ICE that was just a little more expensive than the runner was counting on is going to be similarly disappointed. Those situations are possible in a game of Netrunner, but they are going to be few and far between. In more games, Thomas Haas is going to be a waste of your time.

What a perfect card for Thomas Haas, whose biggest character trait is that he is a waste of time loser.

I'm going to try to send him to Space Camp.

Oracle May is a fun card.

It's delightful to flip cards off the top of your deck.

But deckbuilding with Oracle May offers a challenge. While gaining 2 and drawing a card for a single click is a great upside, instead taking the top card of your stack and dumping it into your heap when you guess wrong is a little underwhelming.

There are three solutions to this problem:

1) Know the top card of your stack

There are a few cards that let you know what is on top of your deck: Motivation, Rolodex, and Angel Arena all let you peak to make your guess. Test Run lets you know there is a program on top of your deck, though that trick only works once for each time you play Test Run.

You can also use Mr. Li to draw half your deck, placing the other half on the bottom, and then you can then use Oracle May to pick up the rest. This will take a lot of clicks, a lot of turns, and a perfect memory, so hopefully you have those if you try this approach.

If you are using any of these approaches, you might also consider finding room for another one influence card that cares about the top of your deck: Eureka!

2. Have a pretty good idea what is on top of your stack

This is one of the most popular Oracle May decks on NetrunnerDB. The archetype is often called 'String Theory'. Because the deck is almost entirely events, you can guess event every time and be right almost every time.

The String Theory deck also has Test Run so when you guess wrong, you can save your poor program from the heap.

You could theoretically build a deck like this for any card type in any faction. Events are probably the easiest but there may be other paths. A hardware deck with Clone Chips to get your programs back??? Nothing but good sense is stopping you!

When building these deck, you are of course allowed to include cards of other types, but just know that every off-type card you include makes Oracle May a little worse.

3. #YOLO

Just put Oracle May in your deck and believe in the heart of the cards. Call shots. Be right. Every time. Have your opponent wonder how you are doing it.

They might think you are cheating but you aren't.

You are just THE ONE.

BONUS OPTION: Don't bother

How much more efficient is an Oracle May click than a Symmetrical Visage click? Not that much less efficient, plus you aren't revealing to the corp the cards you are drawing. Is the one influence and severe drawback (which you should probably build around) worth it? Maybe not.

But, both as a deckbuilder and as a player, Oracle May is a fun card.