Of the cards I've gotten and started playing with, my current favorite is Gargoya Devil. That may change as I acquire more however. Gargoya Devil is a good for mid-range and it's shield gives it a bit of tankiness to go with its flying ability giving it a fair survivability even if it makes it to the front. Plus, the close range skill means that it doesn't even stop attacking. Being neutral, it finds use in a lot of teams.

I would prefer the card(s) please, as commenting is the most posting I do currently. @half-fast