Cheapest priced copy (Modern Horizons 2): $0.35 at Card Kingdom, near mint, their price list as of .
Squirrel Sanctuary 
Enchantment · Uncommon · Modern Horizons 2 · #174
When this enchantment enters, create a 1/1 green Squirrel creature token.
Whenever a nontoken creature you control dies, you may pay {1}. If you do, return this enchantment to its owner's hand.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 2 | 174 | Uncommon | $0.35 | $0.79 |
One ruling from Wizards of the Coast
- 18 June 2021The last ability functions only while Squirrel Sanctuary is on the battlefield. It won't return itself from your graveyard to your hand.