Creature — Beast 4/4, 3G (4)
Uncommon
At the beginning of your upkeep, return a creature you control to its owner's hand.
"They're easy enough to find. Question is, are you sure you want to find one?"
—Juruk, Kalonian tracker
Illus. James Ryman

7/1/2012: Roaring Primadox's ability is mandatory. When it resolves, if Roaring Primadox is the only creature you control, you must return it to its owner's hand.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Standard (Type 2)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern