Quira

"Simulate me, wretch. Calculate the permutations of my divinity. Compute the death in the shape of my throne. Render my shadow on the stone of ten thousand graveyard worlds! It will never be enough. I hold the Tablets of Ruin. I speak to the Deep. Not with a galaxy of thinking matter could you encompass me. Behold!"

- Oryx, battling Quira

Quira, Blade Transform is a former Vex Axis Mind who was Taken by Oryx, and was subsequently gifted to Savathun.

Overview
When the Hive first met the Vex after Crota used his sword to tear open a portal into another dimension, the Vex became intrigued by the paracasual powers of Oryx posessed, specifically, the Darkness. Attempting to solve the problem of paracasuality, the Vex created the Axis Mind Quira, Blade Transform. Quira's solution to the problem of the Darkness was to simply kill off the Hive, in accordance to Sword Logic.