Tom Riddle's Diary

Hexproof; you may choose not to untap
Tom Riddle's Diary during your untap step.
{2}{u}{u}{t}: Gain control of target creature not
named Harry Potter as long as Tom Riddle's
Diary remains tapped.
{3}{b}{b}{t}: Return Lord Voldemort from the
command zone to the battlefield with 1 loyalty
counter. Activate this ability only if Lord
Voldemort has been cast at least once.