Hecotaro, Thief of memories

You may not untap Hecotaro, Thief of memories during your upkeep
{u}{b}{r}{t}: Exile target permanent from a graveyard, put a token of the permanent exiled this way onto the battlefield
If you lose control or untap Hecotaro, Thief of memories sacrafice all tokens made by Hecotaro, Thief of memories