Wilson is generally very strong, but he's got extremely high synergies with George Barnaby, since:

• George wants to discard a card every phase, and this lets you discard during player windows you might not otherwise be able to easily discard in, such as the Enemy Phase, or the Mythos Phase if someone ends up taking a skill test.
• Obviously any card with or icons can be discarded to Wilson and will then boost your next skill test that round, but if it's the first card you've discarded this phase, you can commit it again to the actual skill test. So something like Inquiring Mind (assuming there's a clue at your location) can suddenly become an effective +6, and draw you a card.
• Cornered is an obvious comparison; it lets you discard a card for +2 regardless of icons (turning Inquiring Mind into an effective +5), but it has some subtle differences. Wilson potentially lets you get a higher benefit (if the card has more icons), gives you some flexibility (you can gain resources, draw cards, and heal Wilson too), and lets you discard a card in an earlier phase to bank the boost for the next skill test later that round. But I mean, they're not competing, you can run both. If Wilson was nothing more than a third copy of Cornered, it'd be a great card in almost every George deck.
• And while Last Chance is already great for George, Wilson makes it nuts. You can potentially do something like: In the Mythos Phase when your teammate takes a test, discard Last Chance to draw a card, then resolve any 6 effects off Wilson. Then later when you commit it from under George, you get another big boost to the test depending on cards in hand (which you can boost further by discarding more cards via Cornered or, if Wilson had readied by now, Wilson again, collecting whatever rewards that gives plus drawing another card), then when you almost inevitably pass, you draw another two cards.
• George works really well with Dark Horse, but one challenge of a Dark Horse deck is occasionally needing an influx of resources to help with setup or to pay for a large asset. Wilson turns and icons into resources at a 1:1 ratio which means you can turn something as boring as an Unexpected Courage into a mini-resource cache, draw a card, then still commit it later to a test, without using a single action, which can occasionally be very convenient.

Dauntless Spirit is worth calling out as well. I'm not quite sure if it would work with George ("You may commit facedown cards beneath George Barnaby to skill tests as if they were in your hand.") or would not (since they don't work with Amanda Sharpe). If they do work, then Dauntless Spirit is pretty decent, as it reads something like "get +3 to your next skill test this round, and heal all damage and horror off Wilson", although as weird as it is to say, that effect might not be quite strong enough to be worth 1XP in most George decks? Pity that Survey the Area isn't in George's card pool (assuming the cycle works with his ability at all).

Enchant this gun and customize your ammo with quicksilver and you have a fast lightning gun that can be reloaded. Leo and Zoey can take this combo and both have the to pull it off.

They will both have a value of 9, which can even be boosted by 2 with the Extended Stock customization. Enough even for expert.

After the guns exhaust, you can either spend your turn reloading or have saved actions to move or do some clue getting.

According to FFG, you can use it in step 6, even if there are no clues in your location.

"Yes, you can use Professor William Webb’s ability on a location with no clues, so long as you can resolve one of its effects. You’d trigger this ability during step 6, as it’s worded as “when” you determine success."

Caveat that I haven't played with this card yet, just finished some research for Grizzled and realized how common and high-impact Hazard treacheries are in Return to the Forgotten Age.

Some notables for that campaign... spoilers follow, but come on, you're not reading the reviews of THIS card if you care about that... Snake Bite, Resentful Wilds, Crypt Chill, Deep Dark, Poisonous Spores, Ants!. Crypt Chill and Ants! can be brutal asset hate pieces. Snake Bite and Poisonous Spores are both notable as Poisoned sources that can situationally be difficult or impossible to avoid. Resentful Wilds and Deep Dark are hit-or-miss, but potentially cost a lot of tempo.

And to top it off, this would be an acceptable, if slightly below rate, health/sanity buffer if the cancel ability didn't exist at all. Guardian gets 3/3 for 3 resources at 0xp, but in an extremely competitive hand slot. Paying 2xp and 1 resource to move that to a much less competitive slot and pick up that treachery cancellation ability seems pretty good to me. Especially in a campaign like Forgotten Age that stresses your health.

Random synergy bonus round - Mark Harrigan still draws a card for cancelling the treachery, since the cancel ability deals 1 damage to the Gear. And you still get your Second Wind / Second Wind extra healing value.

Ils veulent vraiment qu'on joue Wilson Richards ^^ En vrai c'est bien, mais tellement limité qu'à part lui, je ne vois pas qui d'autre pourrait en tirer profit. Et puis faut la trouver, la piocher, la jouer ... Si Wilson était jouable, ok, mais là, à part compenser une faiblesse, ça ne sert pas à grand chose.