The Evil Bog

The Evil Bog comes into play tapped.
{t}: Add {b} to your mana pool.
{3}{b}, {t}: Exile target creature. At the beginning of each of that creature's controller's upkeeps that player rolls a six-sided die. On a 3, 4, 5, or 6, return that creature to the battlefield under its owner's control.
"Sigh... Drop the ball, Shrek"