Cheapest priced copy (Duskmourn: House of Horror): $0.35 at Card Kingdom, near mint, their price list as of .
Found Footage 
Artifact — Clue · Common · Duskmourn: House of Horror · #246
You may look at face-down creatures your opponents control any time.
{2}, Sacrifice this artifact: Surveil 2, then draw a card. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror | 246 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 20 September 2024Found Footage's first ability doesn't let you look at face-down spells you don't control on the stack.
- 20 September 2024Found Footage's first ability lets you look at face-down creatures whenever you want, even if you don't have priority. This action doesn't use the stack. Knowing what those cards are becomes part of the information you have access to, just like you can look at the cards in your hand.