As a competitor I don't want to vote, but I can give feedback.
Nova: pretty effective and it's probably an art that could be used in the game. Good job!
Dry spell: it's simple, but I really like it, the style it is painted in.
Fahrenheit: this art is dynamic, like fire. Overall good art, but I don't like that small flame at the end of the handle, it looks as it was painted in different style.
Ice dragon: another good pixel art from a guy who loves creating pixel art. I only doubt that style is suitable for EtG. In addition, it's a good art, but I know you can do much better! I mean, I saw better art from you
But it's subjective of course.
Soul Catcher: the guy who created it knows what he is doing. Nothing more to say. Definitely an art that could be used in the game.
Crimson dragon: I must say, you get better and better in drawing/painting and plus for it is hand-made. But unfortunately, because of the fact it is hand-made and in cartoon style, it wouldn't fit in the game. But it's a nice art
Antlion: commenting on your own art is difficult. I only say I'm quite satisfied with the outcome, but not fully. But you can always do better
