In the new pack Boundary Beyond, there is a skill card called True Understanding. It’s printed text says you only commit it to a test on a scenario card.

Where would this appear in game? What exactly counts as a scenario card? Could someone give me an example please?

Scenario cards include act, agenda, location, treachery and enemy cards. If any of these cards have a test printed on them then True Understanding could be committed to the test.

Examples from the core set off the top of my head:

• The test on Act 3a of The Devourer Below.
• The test on Agenda 2b of The Devourer Below.
• The test on The Graveyard in The Midnight Masks.
• The tests on the treachery cards Grasping Hands, Rotting Remains, Frozen in Fear, Crypt Chill, etc.
• While there aren’t any in the core set, parley tests on enemy cards would allow True Understanding to be committed.

Hope that helps.

Scenario cards are all cards that are controlled by the scenario. That includes agendas, acts, locations, treacheries, enemies and story assets that haven't been earned yet (for instance, Lita Chantler in The Gathering).

Wait jussst a minute, this applies to treachery cards? I can turn the ever so average Rotting remains test into an actionless, resourceless clue?

Yes, provided you succeed on the test while committing True Understanding.

I'm still fuzzy on the whole player/encounter/scenario card thing. Most of it is clear, but weaknesses and story assets confuse me.

They're the cards that can cross the boundaries, so the most likely sources of confusion.

For weaknesses:

• If they have a player card type (asset, event or skill), they're always player cards.
• If they have an encounter card type (enemy or treachery), they are treated as encounter cards while you are resolving them and while they are in your threat area. The rest of the time, they are player cards.

For story assets:

• If they are controlled by the scenario (e.g. Lita Chantler in The Gathering before you successfully parley with her), they are encounter cards.
• If they are controlled by a player (e.g. Jazz Mulligan after you successfully parley with him), they are player cards.

Note that what happens to those cards when they leave play depends on who owns them (whose deck they started the scenario in) and what back they have:

• A card owned by an investigator (always with a player back) will go to that investigator's discard pile (or other out of play area). For instance, Lita Chantler in Midnight Masks or The Devourer Below.
• A card owned by the scenario with an encounter back will go to the encounter discard pile. For instance, Jazz Mulligan.
• A card owned by the scenario with a player back will be removed from the game. For instance, Lita Chantler in The Gathering.

But when is something a "scenario card"? I've seen Matt Newman say that although "encounter card" and "scenario card" are often used interchangeably, they aren't actually the same thing.

Just now, CSerpent said:

But when is something a "scenario card"?

Act cards, Agenda cards, scenario reference cards, locations, any enemy or treachery that starts in play, anything revealed from the encounter deck, or player-back encounter-type cards (E.g. Weakness treacheries or enemies) once revealed from a player deck.

7 hours ago, Network57 said:

Act cards, Agenda cards, scenario reference cards, locations, any enemy or treachery that starts in play, anything revealed from the encounter deck, or player-back encounter-type cards (E.g. Weakness treacheries or enemies) once revealed from a player deck.

Are weaknesses scenario cards? I didn’t think so, they can be enemy or treachery cards, but I’m fairly certain they’re not scenario cards (only reference I can find is at the top of page 28 of the RRG). I think the easiest shorthand for what constitutes a scenario card is anything you didn’t bring with you in your deck. By definition, anything in the game that didn’t come from a player must be a scenario card, right? The only odd one out, I guess, is when you receive a story driven weakness during a scenario. Does it immediately become ‘yours’, or does it belong to the scenario until the point you officially add it to your deck at the end of the game?

13 hours ago, General Zodd said:

Are weaknesses scenario cards?

I don't think this is explicitly addressed anywhere in the rules, but from the FAQ (1.12) "Weaknesses with an encounter cardtype (such as enemies or treacheries) are considered to be player cards while they are in their bearer’s deck, and are considered to be encounter cards while they are being resolved, and once they have entered play. Before a weakness with an encounter cardtype is resolved, it is still considered to be a player card."

Encounter card does not necessarily equal scenario card, but this suggests that a player card can stop being a player card when it is drawn. Since enemies and treacheries are examples of scenario cards (RRG, appendix IV), I think the case can be made that treachery/enemy weaknesses become scenario cards when they are drawn.

However, I think this leads to the conclusion that you've got a scenario card which is still under player control - if it wasn't then it wouldn't go into that player's discard pile when it was discarded. This seems somewhat counter-intuitive to me, but I can't see anything in the Ownership and Control section of the RRG that forbids this.

13 hours ago, General Zodd said:

I think the easiest shorthand for what constitutes a scenario card is anything you didn’t bring with you in your deck. By definition, anything in the game that didn’t come from a player must be a scenario card, right?

If what I've said above is true then your example would be good for determining who controls owns the card, but not what type of card it is. We end up in the situation that a scenario-controlled card is not necessarily a scenario card and a player-controlled card is not necessarily a player card, hence counter-intuitive. It is also entirely possible that what I've said above is false and that sanity prevails... but then again this is Arkham Horror!

@Assussanni You're confusing control and ownership. A card goes into its owner's discard pile, not necessarily its controller's.

Quote

If a card would enter an out-of-play area that does not belong to the card’s owner, the card is physically placed in its owner’s equivalent out-of-play area instead. The card is considered to have entered its controller’s out-of-play area,
and only the physical placement of the card is adjusted.

Weaknesses are owned by the player, but controlled by the scenario if they're enemies or treacheries and either resolving or in play.