Nullification

Nullification is a mythic rainbow dagger, requiring a minimum level of 95 to wield.

Identifications
It costs 1800 Emeralds to Identify Nullification

Lore
"The diminutive stature of this item belies its abilities. Absorbing and expelling magical energy in precise bursts, it protects the user from all manner of attacks while punishing those who dare strike."

Trivia

 * Nullification is one of the four mythics released in the eighth patch update of 1.17.