Cheapest priced copy (Innistrad: Double Feature): $0.35 at Card Kingdom, near mint, their price list as of .
Covetous Castaway // Ghostly Castigator 
Creature — Human // Creature — Spirit · 1/3 · Uncommon · Innistrad: Midnight Hunt · #45
When this creature dies, mill three cards. (Put the top three cards of your library into your graveyard.)
Disturb {3}{U}{U} (You may cast this card from your graveyard transformed for its disturb cost.)
Flying
When this creature enters, you may shuffle up to three target cards from your graveyard into your library.
If Ghostly Castigator would be put into a graveyard from anywhere, exile it instead.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 45 | Uncommon | $0.35 | $0.49 |
| Innistrad Remastered | 58 | Uncommon | $0.35 | $0.49 |
| Innistrad Remastered | 456 | Uncommon | $0.35 | $0.49 |
| Innistrad: Midnight Hunt | 45 | Uncommon | $0.35 | $0.49 |
7 rulings from Wizards of the Coast
- 24 September 2021"Disturb [cost]" means "You may cast this card transformed from your graveyard by paying [cost] rather than its mana cost."
- 24 September 2021If you copy a permanent spell cast this way (perhaps with a card like Double Major), the copy becomes a token that's a copy of the card's back face, even though it isn't itself a double-faced card.
- 24 September 2021A spell cast this way enters the battlefield with its back face up.
- 24 September 2021When you cast a spell using a card's disturb ability, the card is put onto the stack with its back face up. The resulting spell has all the characteristics of that face.
- 24 September 2021Disturb is found only on the front faces of some double-faced cards.
- 24 September 2021The back face of each card with disturb has an ability that instructs its controller to exile if it would be put into a graveyard from anywhere. This includes going to the graveyard from the stack, so if the spell is countered after you cast it using the disturb ability, it will be put into exile.
- 24 September 2021To determine the total cost of a spell, start with the mana cost or alternative cost (such as a disturb cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of a spell cast using disturb is determined by the mana cost on the front face of the card, no matter what the total cost to cast the spell was. (This is a special rule that applies only to nonmodal double faced-cards, including ones with disturb.)