Sphere of Sapience is a 1 Mana Cost Legendary Neutral Weapon card from the Scholomance Academy set!
At the start of your turn, look at your top card. You can put it on the bottom and lose 1 Durability.
Flavor TextThis is what it sounds like when spheres scry.
Sphere of Sapience Additional Information
I know that the card image is a bit bugged, waiting for Blizzard to fix it on their official card list.