Cheapest priced copy (Modern Horizons 2): $0.35 at Card Kingdom, near mint, their price list as of .
Drey Keeper 
Creature — Elf Druid · 2/2 · Common · Modern Horizons 2 · #194
When this creature enters, create two 1/1 green Squirrel creature tokens.
{3}{B}: Squirrels you control get +1/+0 and gain menace until end of turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 2 | 194 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 18 June 2021Gaining menace after blockers are declared won't undo a block that's already been done.