Cheapest priced copy (Dominaria Remastered): $0.35 at Card Kingdom, near mint, their price list as of .
Ovinomancer 
Creature — Human Wizard · 0/1 · Rare · Multiverse Gift Box · #2
When this creature enters, sacrifice it unless you return three basic lands you control to their owner's hand.
{T}, Return this creature to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
5 printings · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria Remastered | 64 | Uncommon | $0.35 | $0.49 |
| Multiverse Gift Box | 2 | Rare | — | — |
| The List | DMR-64 | Uncommon | $0.35 | — |
| Time Spiral Timeshifted | 27 | Special | $0.35 | $2.49 |
| Visions | 39 | Uncommon | $0.35 | — |
One ruling from Wizards of the Coast
- 8 December 2022Ovinomancer is a legal target for its own ability. Activating that ability will cause Ovinomancer to return to its owner’s hand, so the ability will have an illegal target. It won’t resolve, and no one will create a Sheep token.