Cheapest priced copy (Modern Horizons): $0.49 at Card Kingdom, near mint, their price list as of .
Nether Spirit 
Creature — Spirit · 2/2 · Rare · Modern Horizons · #98
At the beginning of your upkeep, if this card is the only creature card in your graveyard, you may return this card to the battlefield.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.49 to $279.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons | 98 | Rare | $0.49 | $0.49 |
| Mercadian Masques | 149 | Rare | $8.99 | $279.99 |
| World Championship Decks 2001 | ar149 | Rare | $3.49 | — |
3 rulings from Wizards of the Coast
- 14 June 2019If Nether Spirit isn't the only creature card in your graveyard as your upkeep begins, its ability won't trigger. You can't take any actions during your turn before your upkeep begins.
- 14 June 2019If you have two Nether Spirits in your graveyard, they stop each other from returning.
- 14 June 2019If Nether Spirit isn't the only creature card in your graveyard as its ability resolves, it remains in your graveyard.