Ila, the Pickpocket

You can't sacrifice Ila, the Pickpocket to cast spells or activate abilities.
{0}: Until Ila leaves the battlefield, at the beginning of each player's upkeep, that player gains control of it. If that player isn't you, exile the top card of that player's library. Otherwise, exile Ila, return it to the battlefield under its owner's control, then you may play those cards
for as long as they remain exiled. Activate this ability only once.