"extraordinary wisdom" is a perfectly correct and usable phrase in written English.
You can use it to describe a person or a situation, as in: Tom demonstrated extraordinary wisdom in negotiating the new contract with the supplier.
We will miss his extraordinary wisdom, intelligence, and compassion.
Val was a true woman of valor, a woman of extraordinary wisdom, kindness and integrity.
He was a true maverick in every sense and we will miss his extraordinary wisdom, spirit and kindness.
To many of its members, Mr. Wahid, or Gus Dur, as he is commonly known, is endowed with extraordinary wisdom and faculties.
My noble dream is not a lawyer of extraordinary wisdom and discretion, but merely a regular person who balks at bending the law out of shape to permit her client to do something.
Deepest sympathy to the Gewirtz family who, as everyone else who knew him, will forever be blessed with the memory and inspiration of this most gracious, honorable, kind man of extraordinary wisdom, sensitivity and humility.
"Today our multinational nation is again in a situation that demands of all of us extraordinary restraint, wisdom and skill to emerge from this conflict by peaceful means through negotiations and reconciliation," Ms. Otunbayeva said in remarks carried by local news media.
I would now add the new Catholic Pope Francis, whose daily deeds of extraordinary kindness, wisdom and generosity of spirit can serve as a model for all religious leaders.
Her extraordinary intel ligence, wisdom, humor, and commitment touched us all and will be sorely missed.
We are deeply saddened by the loss of Evelyn, an extraordinary woman whose wisdom, strength, vision, warmth and dedication inspired so many.
Her family will miss this gentle, loving and kind lady of extraordinary strength, whose wisdom and keen intelligence we will never forget.
