The Reality Chip - 74 R NEO

You may look at the top card of your library any time.
As long as The Reality Chip is attached to a creature, you may play lands and cast spells from the top of your library.
Reconfigure {2}{U} ({2}{U}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

rare
Legendary Artifact Creature — Equipment Jellyfish
From the Magic: The Gathering set Kamigawa: Neon Dynasty.