Cheapest priced copy (Commander Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Yedora, Grave Gardener 
Legendary Creature — Treefolk Druid · 5/5 · Uncommon · Duskmourn: House of Horror Commander · #209
Whenever another nontoken creature you control dies, you may return it to the battlefield face down under its owner's control. It's a Forest land. (It has no other types or abilities.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
9 printings · $0.35 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2021 | 70 | Rare | $0.49 | — |
| Commander 2021 | 397 | Rare | $1.49 | — |
| Commander Masters | 333 | Uncommon | $0.35 | $0.49 |
| Duskmourn: House of Horror Commander | 209 | Uncommon | $0.35 | — |
| Murders at Karlov Manor Commander | 197 | Rare | $0.49 | — |
| Multiverse Legends | 30 | Rare | $0.49 | $0.79 |
| Multiverse Legends | 95 | Rare | — | — |
| Multiverse Legends | 160 | Rare | — | $5.99 |
| Multiverse Legends | 160z | Rare | — | — |
3 rulings from Wizards of the Coast
- 16 April 2021The face-down card has no name or colors. Its only type is land, its only subtype is Forest, and its only ability is "{T}: Add {G}."
- 16 April 2021If the face-down card has morph, you can pay its morph cost to turn it face up.
- 16 April 2021If one of these Forests is turned face up, the effect making it a Forest land will expire. The face-up permanent will again have its printed name, type line, mana cost, abilities, and so on.