What is this anime called?

WHAT WAS THAT ANIME CALLED?

• Ok, this might sound strange but I thought I might start watching anime again (in the original Japanese) because I used to watch the English dubs when I was younger so I made a list of the Anime I know… Eventually I went through it and didn’t feel like watching any of them until I remembered an Anime from a few years ago but I can’t remember what it was called!!! This is what I remember of it if you could PLEASE HELP ME IDENTIFY THE NAME OF THIS ANIME: 1 – The main character was male with silver/grey hair. 2 – He had a sword similar to (but not the same as) the Buster Sword from Final Fantasy VII. 3 – He had a pet wolf that looked like a snowman. 4 – He met a girl I think they named ELLE from her tattoo on her arm that was really the number 3113. 5 – In some early episodes he fought a man that could turn himself into Carbon Monoxide. 6 – Later on there was a bad guy with green hair and he could control lightning and he almost killed the main character. 7 – There was fight with the main character in which he needed to win a crystal or something to improve his sword. That’s all I remember really, it was like 10 years ago … PLEASE HELP … I would love to watch it in the original Japanese now. Thanks.

• Answer:

  I believe it's Rave Master.