Cheapest priced copy (Modern Horizons): $0.35 at Card Kingdom, near mint, their price list as of .
Winter's Rest 
Snow Enchantment — Aura · Common · Jumpstart 2022 · #374
Enchant creature
When this Aura enters, tap enchanted creature.
As long as you control another snow permanent, enchanted creature doesn't untap during its controller's untap step.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 374 | Common | $0.79 | — |
| Modern Horizons | 78 | Common | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 14 June 2019If you lose control of all of your other snow permanents, then control a new one, the effect of Winter's Rest will apply to the enchanted creature again.
- 14 June 2019If Winter's Rest is destroyed while its enters-the-battlefield triggered ability is on the stack, the creature that it enchanted is tapped as that ability resolves.
- 14 June 2019If the creature this Aura would enchant is an illegal target by the time Winter's Rest resolves, the entire spell doesn't resolve. It won't enter the battlefield, so its ability won't trigger.