[Taligaro]

When making a map with an editor, no. You can't change the type or amount of damage spells like Storm and Yam does no matter what editor you use. The only way to change what type and how much damage a spell does is to make a Modification.

For example;
Say you want the Yamato to deal more damage as you upgrade ship weapons. This is completely possible when making a MOD for SC. You can also have building armor and weapons upgradeable as well. You can even increase a Bunker's capacity to 8 units max. You can even increase the amount of damage a Nuke does, its splash radius, and its damage can be upgraded as well. When making a mod, you can do just about any damn thing you want. There are some limitations to what the game will allow, but the rest, provides for hours of entertainment.

If you're interested in modding, let me know, I'll point you to the right tools and help you with some basics...