Pnakotic Ritual

Delirium - When Pnakotic Ritual is put into the graveyard from anywhere, if there are four or
more card types among cards in your graveyard,
scry 1 and draw a card.
{2}{u}, Exile Pnakotic Ritual and five other cards
from your graveyard: If there were six or more
cards types among cards exiled this way, search
your library for a noncreature, nonland card and
exile it. You may cast that card without paying
its mana cost.