Negi95

"repulsion wave"... if it had color it would be more of a wall against a beam than a classic "beam struggle"

Where does all that chakra comes from? He clearly didn't get nearly enough from the first 5 tailed beasts to use so much

A'fei?

I don't see how them being in Ars would stop the Sword God. Maybe being inside the palace, but I have my doubts about that too.

I wouldn't say he should do it as many times as he can, but he does need the boon all things considered

I'm still at chapter 72 so I don't know what happens later on. You are right that learning those things is useful in general, I just think they a pretty low priority in their situation.

You make a good poin, I only wish the author himself would give that kind of information rather than make readers randomly guess about it

You know, I really didn't remember that, I was sure it was a raven, lol

I mean, dumbledore being willing to do anything for the prophecy is what led to his death 6 times. I wouldn't count on the old man not doing something stupid for one of his plans and losing my last chance, I think that's a bit too big of a gamble.

True, that's possible. Definitely not a smart move since it completely makes his word lose any credibility, and none of his threats would ever be taken seriously anymore by them, but still possible. ... Nonetheless, my point was it's nonsense and that wouldn't change.