Sphere of Sapience

Sphere of Sapience is a legendary neutral weapon card, from the Scholomance Academy set.

Strategy
Sphere of Sapience is a great card for combo decks, giving you at least four chances to filter your deck and draw combo pieces. Since this card doesn't actually give you any card advantage (and in fact costs card advantage and tempo to play), it's generally a poor choice for Tempo decks.

Druid players can use this weapon in Wild format to instantly break the Twig of the World Tree, instantly gaining 10 mana crystals at turn 5, or earlier with The Coin, Innervate, or Lightning Bloom. Likewise, other classes can use it to instantly activate the Deathrattles on their weapons, or counter bad RNG from cards like Blingtron 3000 giving you a weapon like a Cursed Blade.

This can also be an effective counter to Bomb Warrior, as you can choose to avoid drawing the Bombs. It also works well in Soul Fragment decks, since you can choose to draw/avoid Soul Fragments so you can save them up for cards like Soulciologist Malicia, or heal up in a pinch. This does have anti-synergy for Demon Hunters as it blocks their weapon and hero power, but is decent for Warlock decks.

Lore
Sphere of Sapience is unique to Hearthstone.

Trivia

 * This is the first collectible neutral non-minion card to ever be added in Hearthstone.
 * Sphere of Sapience's effect and flavor text are references to the Scry mechanic from Magic: The Gathering.
 * The flavor text is also a reference to the Prince song, "When Doves Cry". More specifically, the line: "This is what it sounds like when doves cry."

Patch changes

 * Added.