Of course, choose astrology, not to mention the good astrological boundary, and you can't waste blood elves to increase astrological prestige. Your astrological reputation is less than others.

Actually, there is another way. You should learn formulas from Oddo first, and then turn to astrology. Anyway, it's a battlefield now, so it's convenient to go out and play the middle task items, and then enter the battlefield when you arrive.

PS: It doesn't matter if you don't have Oddo's reputation after learning the formula.