diff --git a/core/src/gamecode/laws.c b/core/src/gamecode/laws.c
index 7259612b3..c3c395f8b 100755
--- a/core/src/gamecode/laws.c
+++ b/core/src/gamecode/laws.c
@@ -2616,6 +2616,7 @@ static bool display_race(faction * f, unit * u, const race * rc)
       case AT_SPELL:
       case AT_COMBATSPELL:
       case AT_DRAIN_ST:
+      case AT_DRAIN_EXP:
       case AT_DAZZLE:
         bytes = snprintf(bufp, size, "%s", LOC(f->locale, "attack_magical"));
         break;
diff --git a/core/src/kernel/unit.c b/core/src/kernel/unit.c
index 256338325..8d304251d 100644
--- a/core/src/kernel/unit.c
+++ b/core/src/kernel/unit.c
@@ -225,6 +225,7 @@ int gift_items(unit * u, int flags)
   int rule = rule_give();
 
   assert(u->region);
+  assert(u->faction);
 
   if ((u->faction->flags & FFL_QUIT) == 0 || (rule & GIVE_ONDEATH) == 0) {
     if ((rule & GIVE_ALLITEMS) == 0 && (flags & GIFT_FRIENDS))
diff --git a/support/build.lua b/support/build.lua
new file mode 100644
index 000000000..2f50f6679
--- /dev/null
+++ b/support/build.lua
@@ -0,0 +1,74 @@
+function size()
+  return 16
+end
+
+function island(pl, x, y, r)
+  gmtool.make_block(pl, x, y, r)
+  gmtool.make_island(pl, x+r/2+2, y+r/2, size() * 3)
+  gmtool.make_island(pl, x-r-2, y+r/2, size() * 3)
+  gmtool.make_island(pl, x-r/2-2, y-r/2, size() * 3)
+  gmtool.make_island(pl, x+r+2, y-r/2, size() * 3)
+  gmtool.make_island(pl, x+r/2+2, y-r-2, size() * 3)
+  gmtool.make_island(pl, x-r/2-2, y+r+2, size() * 3)
+end
+
+function cross(pl, x, y, r)
+  gmtool.make_block(pl, x-r, y+r*2, r)
+  gmtool.make_block(pl, x+r*4/3, y, r)
+  gmtool.make_block(pl, x-r*4/3, y, r)
+  gmtool.make_block(pl, x+r, y-r*2, r)
+
+  gmtool.make_island(pl, x, y, size() * 3)
+  gmtool.make_island(pl, x, y-r*4/3, size() * 3)
+  gmtool.make_island(pl, x, y+r*4/3, size() * 3)
+  gmtool.make_island(pl, x+r*4/3, y-r*4/3, size() * 3)
+  gmtool.make_island(pl, x-r*4/3, y+r*4/3, size() * 3)
+end
+
+function count()
+  local i = 0
+  for f in factions() do i = i + 1 end
+  print(i)
+end
+
+function line(pl)
+  local m = 0
+  local x, y
+  local i = 0
+  x = 0
+  y = i
+  local r = get_region(x, y, pl)
+  while true do
+    if r==nil then
+      if m==0 and (i>=0 or i<-10) then
+        local s = size()
+        gmtool.make_island(pl, x, y, s*3, s)
+      else
+        gmtool.make_block(pl, x, y, 6)
+      end
+      r = get_region(x, y, pl)
+      if r==nil then
+        r = region.create(x, y, "ocean", pl)
+      end
+      m = 1 - m
+    end
+    i = r.y + 1
+    x = 0
+    y = i
+    r = get_region(x, y, pl)
+    if r~=nil and r.y==0 then break end
+  end
+end
+
+function build(pl)
+  cross(pl, -28, -20, 6)
+  island(pl, 28, -20, 11)
+  island(pl, -28, 20, 11)
+  island(pl, 28, 20, 11)
+  -- line(pl)
+end
+
+eressea.free_game()
+pl = plane.create(0, -50, -40, 90, 80)
+
+build(pl)