propagated the addition of a ranged magical arcane attack...

...to appropriate units in DiD

please review if that is wanted/makes sense and add them to the changelog(s)

data/campaigns/Descent_Into_Darkness/units/apprentice-necromancer.cfg

@@ -1,19 +1,19 @@
+#textdomain wesnoth-did
 [unit]
-    #textdomain wesnoth-did
     id=Apprentice Necromancer
     name=_ "Apprentice Necromancer"
     race=human
     image="units/apprentice-necromancer.png"
     ellipse="misc/ellipse"
     {MAGENTA_IS_THE_TEAM_COLOR}
-    gender=male
-    alignment=neutral
     hitpoints=52
     movement_type=smallfoot
     movement=6
-    level=2
     experience=90
+    level=2
+    alignment=neutral
     advanceto=Dark Mage
+    gender=male
     usage=mixed fighter
     unit_description=_ "Despite his increased magical powers, Malin holds on to his short sword as his melee weapon of choice."
     {DEFENSE_ANIM "units/apprentice-necromancer-defend.png" "units/apprentice-necromancer.png" {SOUND_LIST:HUMAN_HIT} }
@@ -29,15 +29,27 @@
     [/attack]
     [attack]
         name=chill wave
-        description=_ "chill wave"
-        icon="attacks/dark-missile.png"
+        description=_"chill wave"
         type=cold
-        range=ranged
         [specials]
             {WEAPON_SPECIAL_MAGICAL}
         [/specials]
+        range=ranged
         damage=13
         number=2
+        icon=attacks/dark-missile.png
+    [/attack]
+    [attack]
+        name=shadow wave
+        description=_"shadow wave"
+        type=arcane
+        [specials]
+            {WEAPON_SPECIAL_MAGICAL}
+        [/specials]
+        range=ranged
+        damage=9
+        number=2
+        icon=attacks/dark-missile.png
     [/attack]
     [attack_anim]
         [attack_filter]
@@ -49,6 +61,7 @@
             image="projectiles/darkmissile-n.png"
             image_diagonal="projectiles/darkmissile-ne.png"
         [/missile_frame]
+
         [frame]
             begin=-300
             end=-200

data/campaigns/Descent_Into_Darkness/units/dark-mage.cfg

@@ -1,5 +1,5 @@
+#textdomain wesnoth-did
 [unit]
-    #textdomain wesnoth-did
     id=Dark Mage
     name= _ "Dark Mage"
     race=human
@@ -34,7 +34,7 @@ Special Notes:"+{SPECIAL_NOTES_MAGICAL}
     [/attack]
     [attack]
         name=chill wave
-        description=_ "chill wave"
+        description=_"chill wave"
         type=cold
         [specials]
             {WEAPON_SPECIAL_MAGICAL}
@@ -44,6 +44,18 @@ Special Notes:"+{SPECIAL_NOTES_MAGICAL}
         number=2
         icon=attacks/dark-missile.png
     [/attack]
+    [attack]
+        name=shadow wave
+        description=_"shadow wave"
+        type=arcane
+        [specials]
+            {WEAPON_SPECIAL_MAGICAL}
+        [/specials]
+        range=ranged
+        damage=10
+        number=2
+        icon=attacks/dark-missile.png
+    [/attack]
     [attack_anim]
         [attack_filter]
             name=chill wave