Is radagon weak to Blasphemous Blade?

Elden Ring: Blasphemous Blade Build [Stats, Armor & Spells]

Academy of Raya Lucaria Location and Walkthrough - Elden Ring Guide - IGN

Elden Ring: How To Beat Radagon of the Golden Order

Noticed some redditors saying Radagon is weak to fire. Decided to try it out. Take a look. Ng+3 : r/Eldenring

Elden Ring: Radagon boss fight walkthrough

Radagon really doesn't like RoB users… : r/Eldenring

Elden Ring: How to beat Maliketh, the Black Blade

Elden Ring: How to Get the Blasphemous Blade

I cannot beat Radagon so im gonna do an easier boss : r/Eldenring

Radagon of the Golden Order

Is Blasphemous Blade best faith weapon?

Elden Ring: How to beat Maliketh, the Black Blade

Does cold work on Radagon?