So, this is the deck I drafted for testing with Rex when Dunwich is out.

The idea was to make a Clue hunter who could go off by themselves and not need constant support from a tank or combat character. I could also combine Rex's ability with Burglary to increase my efficiency; Rex is picking up everything not nailed down to see how it fits into the story he's about to break!

When trouble inevitably arrives, Rex can dodge out of the way with Elusive and Think on Your Feet. Elusive works as well as anything just for table-hopping moves. I can also be tempted with Dodge over Think on Your Feet; you will certainly be triggering the conditions on Dodge more often than Think on Your Feet!

The core engine here is Dr Milan, Magnifying Glass, and Burglary. With this set up, Rex can easily have a turn which is gain 6 bucks and discover 5 clues, followed up by a card and a buck in his upkeep.

Obviously getting this together isn't easy, so I would advise an aggressive mulligan for the combo pieces and the use of OBoL to filter through your deck too. Cryptic Research is a great card to include on a level up for this reason.

With all this money, I feel Rex is an Investigator I feel comfortable using the stat-boosting talent with. Hyperawareness boosts his Intellect in case you need a hand busting an Obscuring Fog or similar, and lets you dump money into Evade if you're in a sticky situation and have run out of other tricks.

On levelling, as mentioned, I think Cryptic Research is a good call. Upgraded Magnifying Glass is not a terrible use of 1xp (and means you can do the golden opening turn of Milan, Burglary, Glass, Burgle!). Barricade is nice to keep around for the icons, but could easily be cut along with Mind over Matter; the latter more than any other card has a tendency to sit in my hand, not contributing.

Finally, be wary of Rex's Curse. It seems innocuous but it WILL turn up at exactly the wrong moment and half your chance of success on a crucial action! Poor Rex can't even get a coffee without it showing up with a dead fly in it...