Lamashtu, Lover of Pazuzu

When Lamashtu, Lover of Pazuzu enters the battlefield, convert all +1/+1 counters to -1/-1 counters. If a creature should die this way,
exile it instead.
{2} {t}: Remove a loyalty counter from each opponent's Planeswalkers. You may do this
once per turn. If a planeswalker should die this turn, exile it instead.