Everything Must Go

The intended keystone of this deck post-upgrades is the Key of Ys. Not for the boost to stats it gives, which admittedly is very nice, but for the fact that it enables playing Wendy almost entirely from the discard pile.

First, the centerpiece, and the key cards to focus on:

• The Key of Ys. With 3 horror on it, it can boost Wendy's statline to 7, 6, 4, 7. And it mills the deck.
• Scavenging. The other main card in this build. When the Key of Ys triggers, scavenging gets used to bring back the key and everything it dug up.
• Wendy's Amulet. Before, this was far too unreliable without a Seeker willing to play No Stone Unturned. But if you can trash your deck to get it out...
• Lockpicks. Pairs with scavenging to ensure at least one item brought back from the discard per turn, even if the Key isn't out quite yet.

Since we really want at least one of the cards above, there's a heavy focus on card draw:

• Rabbit's Foot: With only 3 base investigate, we're not going to be succeeding on all investigate checks if we're missing the above. Might as well profit. It also lets us have an accessory slot item to play on top of the key, for maximum discard potential.
• Pickpocketing: Normally an iffy pick, but we really need the card draw. Holds the dubious honor of being the only card in the deck that can't be potentially recovered. (Resourceful might get True Survivor). And with only Fire Axe and Backstab as offense (and also on the chopping block for upgrades), Wendy is going to be evading quite a bit.
• Madame Labranche: 2 health, 2 sanity, a baseline of 2 resources a turn, and if you can get the conditional cards out of your hand, potentially an extra card a turn instead. What's not to like?

The selection of events is largely self-explanatory, with the only two outliers being Hiding Spot and Sleight of Hand.

Hiding Spot: Intended for use with Wendy's Amulet. It'll keep popping back on top of the discard, for easy reuse. Separates Elites from chaff, keeps the smaller enemies off friends who haven't drawn their weapon yet, and makes non-hunter enemies a breeze.

Targets for Sleight of Hand, in order of usefulness:

• Key of Ys to toss a third of the deck into the discard for cheap, then scavenge out key items like Lockpicks and Wendy's Amulet.
• Wendy's Amulet, to play a few events from the discard, then return the amulet to hand for committing and scavenging.
• Newspaper, if you get the upgraded version. It'll let you slap down the newspaper for an extra clue without spending an action, then pull it back for committing to investigate checks.
• Flashlight, for the free supplies.
• Fire Axe, on the rare occasion that you'd actually want to fight things.

Fine Clothes is because this deck is going to Carcosa; if you're in another campaign, replace it with whatever you like. Just don't go to Dunwich without Devil's Luck on hand.

Intended upgrades:

• 2x Key of Ys (5)
• 1x Relic Hunter (3)
• 2x Lockpicks (1)
• 2x Peter Sylvestre (2)
• 1x Charisma (3)

Luxury upgrades:

• 2x Newspaper (2)
• 2x Emergency Cache (2)
• 2x Lucky! (2)
• 2x Sneak Attack (2)
• 2x Pickpocketing (2)
• 1x Lucky Dice (4)
• 1x True Survivor (3)
• 1x A Chance Encounter (2)

Intended replacements:

• Backstab
• Fine Clothes
• Pickpocketing / Fire Axe?