I really like the water and holy avatar.
What I don't like is the fact that the unupped versions of Fire, Gravity and Aether are so different from their corresponding upgraded versions. They just get a totally different use wich is, in my opinion, not what upgrading a card should do.
Also, what does the earth avatar do? Except just sit there on the field as cannon fodder.
Nonetheless, very nice job, but I think it needs some work.
I see that Krathos already answered (thank you), but I also wanted to make sure I respond to your post. I answered your question about earth avatar in the earth avatar thread (where I saw another post you made regarding your question).
In terms of upgrading, I think it's good to have cards that transform. It expands the horizon of this game. For example, we have shards. A useless rock turns into something powerful.
Another point is that those creatures are "avatars." So, their abilities are more defined by their elements rather than as a creature. I can see how a specific creature or an animal would have a relatively consistent skill in real life. However, avatars are representations of elements. So, it makes sense for them to possess skills that reflect elemental properties.
For example, for gravity, gravity is a force that "pulls" (although physics would say that this is an incorrect word to use). Just as in Newton's apple, it's why things "drop" to the ground. That's why it's skills, gravitation & reverse gravitation, "drop" creature's attack or HP. If you understand the skills this way, you will see that both unupped and upped skills are more "similar" than "different."
