Cheapest priced copy (Murders at Karlov Manor): $0.35 at Card Kingdom, near mint, their price list as of .
Marketwatch Phantom 
Creature — Spirit Detective · 2/2 · Common · Murders at Karlov Manor · #24
Whenever another creature you control with power 2 or less enters, this creature gains flying until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Murders at Karlov Manor | 24 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 2 February 2024Marketwatch Phantom's ability checks the power of a creature only at the moment it enters the battlefield. If it enters with counters, those counters are included. If that creature's power is 2 or less when it enters the battlefield but becomes greater than 2 after the ability triggers, Marketwatch Phantom will still gain flying until end of turn.