Momo, Junkyard Stray

When Momo, Junkyard Stray enters the battlefield, you may return an artifact card from
your graveyard to your hand.
{2}{p/w}: Exile Momo and return it to the battlefield
under your control. Any player may activate this ability but only as a sorcery.
It is remarkable, in cats, that the outer life they reveal
to their masters is one of perpetual boredom.