Narset, Enlightened Exile - 38 M MAT

Creatures you control have prowess.
Whenever Narset attacks, exile target noncreature, nonland card with mana value less than Narset's power from a graveyard and copy it. You may cast the copy without paying its mana cost.
They called her unique insight a "gift." Then she saw the truth, and suddenly it was a "threat."
mythic
Legendary Creature — Human Monk
From the Magic: The Gathering set March of the Machine: The Aftermath.