Okay, so I was giving an earth wolf beyblade at school (My friend made a group and he invited me but he didn't know I already have a bey). Anyways, my friend wants me to challange him for a practice match and I have a Dark Libra and the earth wolf he gave me. Which beyblade should I use?

Earth Wolf would be the better choice out of the two.

We have an "Ask a question, get an answer!" topic, but you should actually use the "Build me a combo!" thread for that question.