diff --git a/src/common/gamecode/laws.c b/src/common/gamecode/laws.c
index 3a64dc121..007f2a62c 100644
--- a/src/common/gamecode/laws.c
+++ b/src/common/gamecode/laws.c
@@ -2313,7 +2313,7 @@ promotion_cmd(unit * u, struct order * ord)
       maxheroes(u->faction), countheroes(u->faction)));
     return 0;
   }
-  if (u->race!=u->faction->race) {
+  if (valid_race(u->faction, u->race)) {
     ADDMSG(&u->faction->msgs, msg_feedback(u, ord, "heroes_race", "race",
       u->race));
     return 0;
diff --git a/src/common/kernel/faction.c b/src/common/kernel/faction.c
index 5df5bddef..503c10a97 100644
--- a/src/common/kernel/faction.c
+++ b/src/common/kernel/faction.c
@@ -461,6 +461,15 @@ faction_setpassword(faction * f, const char * passw)
   else f->passw = strdup(itoa36(rng_int()));
 }
 
+boolean valid_race(const struct faction * f, const struct race * rc)
+{
+  if (f->race==rc) return true;
+  else {
+    const char * str = get_param(f->race->parameters, "other_race");
+    return (str?rc_find(str)==rc:false);
+  }
+}
+
 const char *
 faction_getpassword(const faction * f)
 {
diff --git a/src/common/kernel/faction.h b/src/common/kernel/faction.h
index eb5150c3f..3ed08bc75 100644
--- a/src/common/kernel/faction.h
+++ b/src/common/kernel/faction.h
@@ -144,6 +144,7 @@ void faction_setemail(struct faction * self, const char * email);
 
 const char * faction_getpassword(const struct faction * self);
 void faction_setpassword(struct faction * self, const char * password);
+boolean valid_race(const struct faction * f, const struct race * rc);
 
 #ifdef __cplusplus
 }
diff --git a/src/eressea/tolua/bind_region.c b/src/eressea/tolua/bind_region.c
index b614f3f5b..c334f117d 100644
--- a/src/eressea/tolua/bind_region.c
+++ b/src/eressea/tolua/bind_region.c
@@ -76,6 +76,14 @@ tolua_region_get_y(lua_State* L)
   return 1;
 }
 
+static int
+tolua_region_get_plane(lua_State* L)
+{
+  region * r = (region *)tolua_tousertype(L, 1, 0);
+  tolua_pushusertype(L, rplane(r), TOLUA_CAST "plane");
+  return 1;
+}
+
 static int
 tolua_region_get_terrain(lua_State* L)
 {
@@ -462,6 +470,15 @@ tolua_plane_tostring(lua_State *L)
   return 1;
 }
 
+static int
+tolua_plane_get_size(lua_State *L)
+{
+  plane * pl = (plane *)tolua_tousertype(L, 1, 0);
+  lua_pushnumber(L, plane_width(pl));
+  lua_pushnumber(L, plane_height(pl));
+  return 2;
+}
+
 static int
 tolua_distance(lua_State *L)
 {
@@ -502,6 +519,7 @@ tolua_region_open(lua_State* L)
       tolua_variable(L, TOLUA_CAST "id", tolua_region_get_id, NULL);
       tolua_variable(L, TOLUA_CAST "x", tolua_region_get_x, NULL);
       tolua_variable(L, TOLUA_CAST "y", tolua_region_get_y, NULL);
+      tolua_variable(L, TOLUA_CAST "plane", tolua_region_get_plane, NULL);
       tolua_variable(L, TOLUA_CAST "name", tolua_region_get_name, tolua_region_set_name);
       tolua_variable(L, TOLUA_CAST "info", tolua_region_get_info, tolua_region_set_info);
       tolua_variable(L, TOLUA_CAST "units", tolua_region_get_units, NULL);
@@ -544,6 +562,7 @@ tolua_region_open(lua_State* L)
       tolua_function(L, TOLUA_CAST "get", tolua_plane_get);
       tolua_function(L, TOLUA_CAST "__tostring", tolua_plane_tostring);
 
+      tolua_function(L, TOLUA_CAST "size", tolua_plane_get_size);
       tolua_variable(L, TOLUA_CAST "id", tolua_plane_get_id, NULL);
       tolua_function(L, TOLUA_CAST "normalize", tolua_plane_normalize);
       tolua_variable(L, TOLUA_CAST "name", tolua_plane_get_name, tolua_plane_set_name);