If you're set on learning aura delph, you could try getting some ribombee/cutiefly to teach you if lucario wont. Apparently cutiefly use aura to detect what flowers will bloom, and a large part of why they're fast is because they also use aura to detect their opponents next move.
“Yeah, why don’t you go hunting bugs and fairies, Delphox? I’m sure you’ll have plenty of fun stumbling around to find one of those elusive twerps.”
“Hmph. I’m sure I could find one that’s got a better personality than you, and even if I couldn’t, at least I have friends that are willing to help me out. You probably can’t even hold onto solid companions, so, that’s probably a worse fatal flaw than all of my issues combined.”
“I have friends.”
“But you’re probably an ass to them, so they’re not really there for you when you’re going to really need to depend on them. I already have had my friends prove that they would. So, again, you’re probably in a worse position in life, and that’s without being blind.”
“...”
“And no, I don’t need my Psychic powers to know that I’m right either, if that’s your next thought crossing your mind. In fact, I’m less skilled at that regardless. But I digress, I have more important matters to ‘stumble into’ and busy myself with. Farewell!”
