Ovinomancer

Creature - Human Wizard 0/1, 2U (3)
When Ovinomancer enters the battlefield, sacrifice it unless you return three basic lands you control to their owner's hand.

{T}, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller puts a 0/1 green Sheep creature token onto the battlefield.¹
Illus. Kev Walker

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: Can target itself. This will cause it to be returned to your hand during announcement and will result in no sheep since it will not be on the battlefield at resolution so the effect fails since it target is illegal.

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (3/16)	Time Spiral "Timeshifted" (Special) Multiverse Gift Box Cards (Special) Visions (Uncommon)