Agent of Liliana

Creatures that you have cast from exile have
deathtouch.
Once on each of your turns, you may exile a
card from a graveyard. Until the end of turn,
you may cast that card for whatever it's mana
cost is -{2}. If that were to reduce the creatures
cost below {1}, its cost instead becomes {1}.
You may spend any color of mana to cast
creatures this way.