Capture Ball

{t}: Flip 2 coins. If either is heads, capture
target creature.
{t}: Release captured creature and flip a coin.
If heads, the released creature returns to
play under your control. Otherwise return it to
its owner's control.
Only one creature can be captured at a time.
Treat captured creatures as exiled. If Capture
Ball is destroyed return captured creature to
it's owner's control.