No.
In all Pokemon games, Riolu can learn dig with the TM Dig. If you have the TM Riolu should be able to learn it.
How does riolu learn aura sphere in pokemon diamond version?
No. No, it cannot.
No.
Actually Riolu doesent learn it. Lucario does. As soon as Riolu evolves (Lv. 20 or 30) it learns Aura Sphere. A pretty handy move that never misses.
Yes!!!!!
enrgeyball
no.
yes. If your riolu evolves after level 37 it will not learn aura sphere. lucario learns aura sphere at lv 37
You can try to find it on www.serebii.net
i think lv 6
you need a modest natured riolu to learn aura sphere or you can use your action replay