The Ancestral Orb

You may look at the top card of your library any
time.
{t}: Add one mana of any color. You may put the
top card of your library into your graveyard.
Whenever a creature card is put into your
graveyard from anywhere, you may exile it.
You may cast creature spells from the top of your
library if they share a creature type with a card
exiled with The Ancestral Orb.