Ive been doing a mix of Thok ast Thok (Hard) and (Extreme). About 30/10. I make sure I damage the boss, I make sure to stand right by him throughout the fight, especially during Surpanahka casts. Ravana is allowed to cast it 2-3 times before we kill him.

I have had a few spells that took 4-5 runs or mobs to learn it. I have never seen this. I do everything Im supposed to to be able to learn the spell. This is kinda ridiculous to be honest. Any ideas? What exactly did you guys do to learn it?