Body Thief

Whenever Body Thief destroys a creature, Body
Thief gains all creature types and abilities that creature had. Then, if that creature's power is
more than this creature's power, Body Thief's
power becomes equal to that creature's power.
Do the same for its toughness.
{4}, {t}, Sacrifice another creature: Destroy target
creature. Abilities trigger as though Body Thief destroyed those creatures.