Added a -l flag to /butcher, which spawns fake lightning on all killed entities.

src/main/java/com/sk89q/worldedit/LocalWorld.java

@@ -39,6 +39,7 @@ public abstract class LocalWorld {
         public static final int PETS = 1 << 0;
         public static final int NPCS = 1 << 1;
         public static final int ANIMALS = 1 << 2;
+        public static final int WITH_LIGHTNING = 1 << 20;
     }
 
     /**

src/main/java/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -475,6 +475,7 @@ public class BukkitWorld extends LocalWorld {
         boolean killPets = (flags & KillFlags.PETS) != 0;
         boolean killNPCs = (flags & KillFlags.NPCS) != 0;
         boolean killAnimals = (flags & KillFlags.ANIMALS) != 0;
+        boolean withLightning = (flags & KillFlags.WITH_LIGHTNING) != 0;
 
         int num = 0;
         double radiusSq = radius * radius;
@@ -502,6 +503,9 @@ public class BukkitWorld extends LocalWorld {
             } catch (ClassNotFoundException e) {}
 
             if (radius < 0 || bukkitOrigin.distanceSquared(ent.getLocation()) <= radiusSq) {
+                if (withLightning) {
+                    world.strikeLightningEffect(ent.getLocation());
+                }
                 ent.remove();
                 ++num;
             }

src/main/java/com/sk89q/worldedit/commands/UtilityCommands.java

@@ -346,14 +346,15 @@ public class UtilityCommands {
     @Command(
         aliases = { "butcher" },
         usage = "[radius]",
-        flags = "pna",
+        flags = "plan",
         desc = "Kill all or nearby mobs",
         help =
             "Kills nearby mobs, or all mobs if you don't specify a radius.\n" +
             "Flags:" +
             "  -p also kills pets.\n" +
             "  -n also kills NPCs.\n" +
-            "  -a also kills animals.",
+            "  -a also kills animals.\n" +
+            "  -l strikes lightning on each killed mob.",
         min = 0,
         max = 1
     )
@@ -369,6 +370,7 @@ public class UtilityCommands {
         if (args.hasFlag('p')) flags |= KillFlags.PETS;
         if (args.hasFlag('n')) flags |= KillFlags.NPCS;
         if (args.hasFlag('a')) flags |= KillFlags.ANIMALS;
+        if (args.hasFlag('l') && player.hasPermission("worldedit.butcher.lightning")) flags |= KillFlags.WITH_LIGHTNING;
 
         int killed;
         if (player.isPlayer()) {