Ghostfreak

Lifelink, flying, Shadow.

When Ghostfreak dies flip it and give control
of it to an opponent.
{2}: Ghostfreak phases out. (While they're phased
out, they're treated as though they don't exist.
They phase in before you untap during your
untap step.)
{2}{b}{b}: gain control of target creature until
the next endstep.