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In close combat, we have many units, but even if we choose, I don't think dragon knights are that great. All they seem to do is cripple (but why?) and pressure shield units (but what if the opponent isn't a shield user/parrier?). Night Stalkers and Moon Elves are powerful, as are the Rose and Arterian units (hmm, if you take the Arterian faction and teach them the shield skill, that would be great...).
I think bows with the Moon faction would be great. And, as I said, I have nothing against firearms, especially if...
Revan, does Nortia's ability to move while shooting also apply to reloading?!
The first option is definitely the strongest (safest, I mean. A Moon Archer might be stronger, but its ability to debuff enemies might not always work). There's no question about it.