Olivia, Crimson Apostle

Flying, ward —Discard a card.
Whenever an opponent discards one or more
cards, you may exile target creature card from a graveyard. If you don't, put a +1/+1 counter on
each Phyrexian and/or Vampire you control.
Whenever Olivia, Crimson Apostle attacks, you
may put a creature exiled with it onto the battlefield tapped and attacking. It's a Phyrexian Vampire in addition to its other types.