Cheapest priced copy (Outlaws of Thunder Junction): $0.35 at Card Kingdom, near mint, their price list as of .
Emergent Haunting 
Enchantment · Uncommon · Outlaws of Thunder Junction · #46
At the beginning of your end step, if you haven't cast a spell from your hand this turn and this enchantment isn't a creature, it becomes a 3/3 Spirit creature with flying in addition to its other types.
{2}{U}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Outlaws of Thunder Junction | 46 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 12 April 2024Emergent Haunting’s first ability doesn’t have a duration, which means it remains a creature indefinitely.
- 12 April 2024At the beginning of your end step, Emergent Haunting’s ability will check to see if you’ve cast a spell from your hand this turn or if Emergent Haunting is a creature. If either is true, the ability won’t trigger at all. If the ability does trigger, it will check again as it tries to resolve. If either is true as the ability tries to resolve, the ability won’t do anything.