RTF is a global modification that replaces all towns in the game.

Are you applying the texture of one effect to the model of another? That looks great.
And I guess it's not a problem if the exhale is short; you could probably make a corresponding ability for it.

Actually, you're right, that exhale affected two squares, but this one would be perfect for a flail attack.

Added after 1 hour 18 minutes
The dragons will be gray (alabaster), white, and silver; I won't be able to make clouds on their wings.