It's practiced. You have no excuse not to shove Practice Makes Perfect into your Mark deck now! Other practiced skills he likes are Overpower, Take the Initiative, Vicious Blow.

Practice Makes Perfect is also a tactic, so you can attach that to Stick to the Plan.

This card will seem more useful when you remember that parley actions, like fight and evade, don’t provoke attacks of opportunity. So even if someone’s coming at you with a butcher knife, feel free to ask them a few questions. And if you have handcuffs out to use, keep your new pal around as long as you need them. Turns out the real Arkham horror was the way you treat cultists!

Spoilers for The Dunwich Legacy:

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..... In the last scenario Lost in time and space to get best ending you have to resign so you have to spend 2 clues. But not with this card. You not only resign from anywhere but you don't have to spend the 2 clues, which is awesome if you are some kind of fighter.

Has anyone suggested an Eavesdrop with Anatomical Diagrams? That card is much more playable in this context. And Logical Reasoning for keeping your horror in check. This is obviously best used with Finn. You might also EAVESdrop from a Stealthy position

This card is rediculous strong. My friend tested for the first time in his Leo deck in our Guardian of the Abyss first scenario and he managed to soak all the damage from monsters and treacheries. With the Wish Eater token cancel, he could pull all the attacks successfully, even when the abyss level became 5 or 6. We played with the Forgotter Age punishing chaos bag (we are at the last scenario in this campaign) and we won really hard. This card is essential to all tankie characters and IMO is a game changer. Also, with the swarming mechanic in Dream Eater, Empty Vessel becomes more strong, even one of the greatest cards for Guardias who have low sanity.