Unidentified Mushroom

{b}{t}, Sacrifice Unidentified Mushroom, choose a target creature, roll a 6-sided die. On a 1 the target creature gets +3/+3, on a 2 target creature gets -3/-3, on a 3 regenerate target creature, on a 4 destroy target creature, on a five untap target creature, on a six tap target creature.
If in doubt, THROW IT OUT!