If you want to see a dragon slayer's dragon (Igneel-metalicana...) fighting, who will it be ?

I want to see Metalicana fight. From what I can see Wendy is REALLY powerful, just doesn't have enough practice. I want to see what Wendy's 'sensei' is capable of

I really want to see Metalicana because it's Gajeel's dragon... But I would be curious to see Sting and Rogue's dragões too

Me