I bless Esdras forever in death...

Strats explanation: Drink a flask in the Warden cutscene to take advantage of the extra blades. Moreover, if you upCC enough fast, more than 5 blades will be sent out, even accelerating the process more.

Use pelican effigy to evade the lasers of Charred Visage

Although I attacked for more than 3 times when I first encounter Esdras (3 or less attack will not trigger the invincible slam, as AlteranQuidem discovered), but my aim is to let Esdras go into his 2nd phase to take advantage of the stand-still spinning attack, which is NOT invincible and cannot be interrupted by any attack. Killing Esdras during this attack safe tons of time by skipping the 3rd phase's invincible "SISTER!!!"