Precognition Field 
Enchantment
You may look at the top card of your library any time.
You may cast instant and sorcery spells from the top of your library.
: Exile the top card of your library.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL