diff --git a/app/.meteor/packages b/app/.meteor/packages
index 46d41ea6..17aedfd9 100644
--- a/app/.meteor/packages
+++ b/app/.meteor/packages
@@ -47,3 +47,4 @@ ostrio:files
 simple:rest-bearer-token-parser
 simple:rest-json-error-handler
 littledata:synced-cron
+mdg:meteor-apm-agent
diff --git a/app/.meteor/versions b/app/.meteor/versions
index 5652121c..65dfa36d 100644
--- a/app/.meteor/versions
+++ b/app/.meteor/versions
@@ -52,8 +52,10 @@ inter-process-messaging@0.1.1
 lai:collection-extensions@0.3.0
 launch-screen@1.3.0
 littledata:synced-cron@1.5.1
+livedata@1.0.18
 localstorage@1.2.0
 logging@1.3.1
+mdg:meteor-apm-agent@3.5.0
 mdg:validated-method@1.2.0
 meteor@1.10.0
 meteor-base@1.5.1
@@ -73,6 +75,7 @@ mongo@1.14.6
 mongo-decimal@0.1.2
 mongo-dev-server@1.1.0
 mongo-id@1.0.8
+mongo-livedata@1.0.12
 npm-mongo@4.3.1
 oauth@2.1.1
 oauth2@1.3.1
diff --git a/app/imports/api/engine/computation/CreatureComputation.js b/app/imports/api/engine/computation/CreatureComputation.js
index 90e28f44..278b3276 100644
--- a/app/imports/api/engine/computation/CreatureComputation.js
+++ b/app/imports/api/engine/computation/CreatureComputation.js
@@ -2,7 +2,7 @@ import { EJSON } from 'meteor/ejson';
 import createGraph from 'ngraph.graph';
 
 export default class CreatureComputation {
-  constructor(properties){
+  constructor(properties, creature){
     // Set up fields
     this.originalPropsById =  {};
     this.propsById =  {};
@@ -11,6 +11,7 @@ export default class CreatureComputation {
     this.props =  properties;
     this.dependencyGraph = createGraph();
     this.errors = [];
+    this.creature = creature;
 
     // Store properties for easy access later
     properties.forEach(prop => {
diff --git a/app/imports/api/engine/computation/buildCreatureComputation.js b/app/imports/api/engine/computation/buildCreatureComputation.js
index 142bda59..8350051c 100644
--- a/app/imports/api/engine/computation/buildCreatureComputation.js
+++ b/app/imports/api/engine/computation/buildCreatureComputation.js
@@ -73,7 +73,7 @@ function getCreature(creatureId){
 
 export function buildComputationFromProps(properties, creature){
 
-  const computation = new CreatureComputation(properties);
+  const computation = new CreatureComputation(properties, creature);
   // Dependency graph where edge(a, b) means a depends on b
   // The graph includes all dependencies even of inactive properties
   // such that any properties changing without changing their dependencies
diff --git a/app/imports/api/engine/computation/writeComputation/writeScope.js b/app/imports/api/engine/computation/writeComputation/writeScope.js
index 3661df4a..c318fb9e 100644
--- a/app/imports/api/engine/computation/writeComputation/writeScope.js
+++ b/app/imports/api/engine/computation/writeComputation/writeScope.js
@@ -1,10 +1,31 @@
 import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import { EJSON } from 'meteor/ejson';
 
-export default function writeScope(creatureId, scope){
-  // Remove large properties that aren't likely to be accessed
+export default function writeScope(creatureId, computation) {
+  const scope = computation.scope;
+  const variables = computation.creature.variables || {};
+  let $set;
   for (const key in scope){
+    // Remove large properties that aren't likely to be accessed
     delete scope[key].parent;
     delete scope[key].ancestors;
+    
+    // Remove empty keys
+    for (const subKey in scope[key]) {
+      if (scope[key][subKey] === undefined) {
+        delete scope[key][subKey]
+      }
+    }
+    
+    // Only update changed fields
+    if (!EJSON.equals(variables[key], scope[key])) {
+      if (!$set) $set = {};
+
+      // Set the changed key in the creature variables
+      $set[`variables.${key}`] = scope[key];
+    }
+  }
+  if ($set) {
+    Creatures.update(creatureId, {$set});
   }
-  Creatures.update(creatureId, {$set: {variables: scope}});
 }
diff --git a/app/imports/api/engine/computeCreature.js b/app/imports/api/engine/computeCreature.js
index 36d58724..55de9359 100644
--- a/app/imports/api/engine/computeCreature.js
+++ b/app/imports/api/engine/computeCreature.js
@@ -20,8 +20,8 @@ function computeComputation(computation, creatureId) {
   try {
     computeCreatureComputation(computation);
     writeAlteredProperties(computation);
-    writeScope(creatureId, computation.scope);
-  } catch (e) {
+    writeScope(creatureId, computation);
+  } catch (e){
     const errorText = e.reason || e.message || e.toString();
     computation.errors.push({
       type: 'crash',
diff --git a/app/imports/server/publications/library.js b/app/imports/server/publications/library.js
index 41e2b080..10553aab 100644
--- a/app/imports/server/publications/library.js
+++ b/app/imports/server/publications/library.js
@@ -1,7 +1,7 @@
 import SimpleSchema from 'simpl-schema';
 import Libraries from '/imports/api/library/Libraries.js';
 import LibraryNodes from '/imports/api/library/LibraryNodes.js';
-import { assertViewPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { assertViewPermission, assertDocViewPermission } from '/imports/api/sharing/sharingPermissions.js';
 
 Meteor.publish('libraries', function(){
   this.autorun(function (){
@@ -63,12 +63,64 @@ Meteor.publish('libraryNodes', function(libraryId){
       LibraryNodes.find({
         'ancestors.id': libraryId,
       }, {
-        sort: {order: 1},
+        sort: { order: 1 },
+        fields: {
+          _id: 1,
+          name: 1,
+          type: 1,
+          icon: 1,
+          color: 1,
+          order: 1,
+          parent: 1,
+          ancestors: 1,
+          // Effect
+          operation: 1,
+          targetTags: 1,
+          stats: 1,
+          // Item
+          quantity: 1,
+          plural: 1,
+          equipped: 1,
+          // Branch
+          branchType: 1,
+          // Damage:
+          damageType: 1,
+          stat: 1,
+          amount: 1,
+          // Class level
+          level: 1,
+          // Proficiency
+          value: 1,
+          // Reference
+          cache: 1,
+        }
       }),
     ];
   });
 });
 
+const nodeIdSchema = new SimpleSchema({
+  libraryNodeId: {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+});
+
+Meteor.publish('libraryNode', function (libraryNodeId) {
+  if (!libraryNodeId) return [];
+  nodeIdSchema.validate({ libraryNodeId });
+  this.autorun(function () {
+    const userId = this.userId;
+    const nodeCursor = LibraryNodes.find({_id: libraryNodeId});
+    let node = nodeCursor.fetch()[0];
+    try { assertDocViewPermission(node, userId) }
+    catch (e) {
+      return this.error(e);
+    }
+    return [ nodeCursor ];
+  });
+});
+
 Meteor.publish('softRemovedLibraryNodes', function(libraryId){
   if (!libraryId) return [];
   libraryIdSchema.validate({libraryId});
diff --git a/app/imports/ui/library/LibraryNodeDialog.vue b/app/imports/ui/library/LibraryNodeDialog.vue
index 99006a69..e67c0cc2 100644
--- a/app/imports/ui/library/LibraryNodeDialog.vue
+++ b/app/imports/ui/library/LibraryNodeDialog.vue
@@ -5,6 +5,7 @@
         :model="model"
         :editing="editing"
         :flat="flat"
+        :embedded="embedded"
         @duplicate="duplicate"
         @move="move"
         @remove="remove"
@@ -12,32 +13,41 @@
         @color-changed="value => change({path: ['color'], value})"
       />
     </template>
-    <template v-if="model">
-      <v-fade-transition
-        mode="out-in"
+    <v-fade-transition
+      mode="out-in"
+    >
+      <div v-if="!_id" />
+      <div
+        v-else-if="!$subReady.libraryNode"
+        class="fill-height layout justify-center align-center"
       >
-        <component
-          :is="model.type + 'Form'"
-          v-if="editing"
-          :key="_id"
-          class="library-node-form"
-          :model="model"
-          @change="change"
-          @push="push"
-          @pull="pull"
+        <v-progress-circular
+          indeterminate
+          color="primary"
+          size="64"
         />
-        <component
-          :is="model.type + 'Viewer'"
-          v-else-if="!editing && $options.components[model.type + 'Viewer']"
-          :key="_id"
-          class="creature-property-viewer"
-          :model="model"
-        />
-        <p v-else>
-          This property can't be viewed yet.
-        </p>
-      </v-fade-transition>
-    </template>
+      </div>
+      <component
+        :is="model.type + 'Form'"
+        v-else-if="model && editing"
+        :key="_id"
+        class="library-node-form"
+        :model="model"
+        @change="change"
+        @push="push"
+        @pull="pull"
+      />
+      <component
+        :is="model.type + 'Viewer'"
+        v-else-if="model && !editing && $options.components[model.type + 'Viewer']"
+        :key="_id"
+        class="creature-property-viewer"
+        :model="model"
+      />
+      <p v-else>
+        This property can't be viewed yet.
+      </p>
+    </v-fade-transition>
     <div
       v-if="!embedded"
       slot="actions"
@@ -136,6 +146,11 @@
       },
     },
     meteor: {
+      $subscribe: {
+        'libraryNode'(){
+          return [this._id];
+        }
+      },
       model(){
         return LibraryNodes.findOne(this.currentId);
       },
diff --git a/app/imports/ui/properties/treeNodeViews/AdjustmentTreeNode.vue b/app/imports/ui/properties/treeNodeViews/AdjustmentTreeNode.vue
index 89324472..d29333d2 100644
--- a/app/imports/ui/properties/treeNodeViews/AdjustmentTreeNode.vue
+++ b/app/imports/ui/properties/treeNodeViews/AdjustmentTreeNode.vue
@@ -21,7 +21,7 @@
         </span>
       </template>
       <template v-else>
-        {{ model.stat || 'Attribute' }} damage
+        <span>{{ model.stat || 'Attribute' }} damage</span>
       </template>
     </div>
   </div>