Cheapest priced copy (Murders at Karlov Manor): $0.35 at Card Kingdom, near mint, their price list as of .
A Killer Among Us 
Enchantment · Uncommon · Murders at Karlov Manor · #167
When this enchantment enters, create a 1/1 white Human creature token, a 1/1 blue Merfolk creature token, and a 1/1 red Goblin creature token. Then secretly choose Human, Merfolk, or Goblin.
Sacrifice this enchantment, Reveal the creature type you chose: If target attacking creature token is the chosen type, put three +1/+1 counters on it and it gains deathtouch until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Murders at Karlov Manor | 167 | Uncommon | $0.35 | $0.49 |
| The List | MKM-167 | Uncommon | — | — |
4 rulings from Wizards of the Coast
- 2 February 2024If you control multiple copies of A Killer Among Us, you may choose the same or different creature types for each one. Be careful to keep track of which type is chosen for each A Killer Among Us.
- 2 February 2024A Killer Among Us's last ability can target any attacking creature token, not just one of the tokens created by its first ability, and not just one of the chosen type. Only a token of the chosen type will get the bonuses, though.
- 2 February 2024There are several ways to secretly choose one of the creature types, including writing that type on a piece of paper that's kept with A Killer Among Us.
- 2 February 2024Only the player who secretly chose the creature type can reveal the creature type they chose. If another player gains control of A Killer Among Us, they will be unable to activate its last ability.