Isabelle, Sly Queen

When Isabelle, Sly Queen enters the
battlefield, target opponent discards a card.
Whenever an opponent discards a card, if the
card was a creature, create a 1/1 black vampire
creature token with lifelink. If the card was a
noncreature, each opponent loses 2 life and
you gain 2 life.
{2}{b}, {t}: Target opponent discards a card.