It is mostly just damage (maybe even DPT, damage per turn?) since it is a turn-based game and time isn't a factor on the damage cards put out, they are basically just damage dealers.

But DPS is the most commonly known acronym. :)

I just have a doubt.. Why do you mention this:

Water Elemental - lvl3... at lvl 5 which we cant play would be even a more awesome last card with the dodge

It is a water card? Was this meant to be some other (like Serpentine Soldier that you mention in the beginning) or is it just a general consideration if you use one of the mentioned dragon summoners instead of Malric?