diff --git a/rogueviz/magiccube.cpp b/rogueviz/magiccube.cpp
index 1bceb02d..a94811b6 100644
--- a/rogueviz/magiccube.cpp
+++ b/rogueviz/magiccube.cpp
@@ -35,23 +35,6 @@ void build(crystal::coord co, int at) {
   
   }
 
-void magic(int sides) {
-  stop_game();
-  if(sides < 0)
-    set_geometry(gCrystal344);
-  else
-    crystal::set_crystal(sides);
-  set_variation(eVariation::pure);
-  firstland = specialland = laCanvas;
-  patterns::whichCanvas = 'g';
-  patterns::canvasback = back;
-  check_cgi();
-  start_game();
-  
-  build(crystal::c0, 0);
-  vizid = (void*) &magic;
-  }
-
 void curveline(hyperpoint a, hyperpoint b, int lev) {
   if(lev>0) {
     hyperpoint c = mid(a, b);
@@ -62,7 +45,6 @@ void curveline(hyperpoint a, hyperpoint b, int lev) {
   }
 
 bool magic_markers(cell *c, const shiftmatrix& V) {
-  if(vizid != (void*) &magic) return false;
   timerghost = false;
   if(c->landparam == back) {
     if(GDIM == 2) {
@@ -91,22 +73,6 @@ bool magic_markers(cell *c, const shiftmatrix& V) {
   return false;
   }
 
-int readArgs() {
-  using namespace arg;
-  
-  if(0) ;
-  else if(argis("-magic")) {
-    PHASEFROM(2);
-    shift(); magic(argi());
-    }
-  else if(argis("-magic3")) {
-    PHASEFROM(2);
-    magic(-1);
-    }
-  else return 1;
-  return 0;
-  }
-
 void twos_to_fours(vector<int>& zeros, crystal::coord co, int d) {
   if(d == crystal::get_dim()) {
     int facetable[5][5];
@@ -133,7 +99,6 @@ void twos_to_fours(vector<int>& zeros, crystal::coord co, int d) {
   }
 
 bool magic_rotate(cell *c) {
-  if(vizid != (void*) &magic) return false;
   if(c->landparam != back) return false;
   vector<int> zeros;
   auto co = crystal::get_coord(c->master);
@@ -151,7 +116,6 @@ bool magic_rotate(cell *c) {
   }
 
 bool magic_rugkey(int sym, int uni) {
-  if(vizid != (void*) &magic) return false;
   if((cmode & sm::NORMAL) && uni == 'p') {
     rug::texturesize = 4096;
     if(rug::rugged) rug::close();
@@ -172,9 +136,43 @@ bool magic_rugkey(int sym, int uni) {
   return false;
   }
 
-auto magichook = addHook(hooks_args, 100, readArgs) + addHook(hooks_drawcell, 100, magic_markers)
-  + addHook(mine::hooks_mark, 150, magic_rotate)
-  + addHook(hooks_handleKey, 150, magic_rugkey);
+void magic(int sides) {
+  stop_game();
+  if(sides < 0)
+    set_geometry(gCrystal344);
+  else
+    crystal::set_crystal(sides);
+  set_variation(eVariation::pure);
+  firstland = specialland = laCanvas;
+  patterns::whichCanvas = 'g';
+  patterns::canvasback = back;
+  check_cgi();
+  start_game();
+  
+  build(crystal::c0, 0);
+ 
+  rv_hook(hooks_drawcell, 100, magic_markers);
+  rv_hook(mine::hooks_mark, 150, magic_rotate);
+  rv_hook(hooks_handleKey, 150, magic_rugkey);
+  }
+
+int readArgs() {
+  using namespace arg;
+  
+  if(0) ;
+  else if(argis("-magic")) {
+    PHASEFROM(2);
+    shift(); magic(argi());
+    }
+  else if(argis("-magic3")) {
+    PHASEFROM(2);
+    magic(-1);
+    }
+  else return 1;
+  return 0;
+  }
+
+auto magichook = addHook(hooks_args, 100, readArgs);
  
 }
 #endif
diff --git a/rogueviz/rogueviz.h b/rogueviz/rogueviz.h
index 95eadea8..53403359 100644
--- a/rogueviz/rogueviz.h
+++ b/rogueviz/rogueviz.h
@@ -98,6 +98,17 @@ namespace rogueviz {
   extern vector<vertexdata> vdata;
  
   void storeall(int from = 0);
+  
+  extern vector<reaction_t> cleanup;
+
+  template<class T, class U> void rv_hook(hookset<T>& m, int prio, U&& hook) {
+    int p = addHook(m, prio, hook);
+    auto del = [&m, p] { 
+      delHook(m, p); 
+      };
+    if(tour::on) tour::on_restore(del);
+    else cleanup.push_back(del);
+    }
 
   namespace anygraph {
     extern double R, alpha, T;