Guinaifen, Ghostbuster

Delve (Each card you exile from your graveyard
while casting this spell pays for {1}.)

At the begining of your endstep you may put a time counter on a target creature. It has vanishing and
It's a Spirit in addition to its other types.

Whenever a spirit dies, Mill seven cards, then you
may return a creature card from your graveyard to
the battlefield. Do this only once each turn.