diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1578,6 +1578,7 @@
     'PhabricatorApplicationConfigurationPanelTestCase' => 'applications/meta/panel/__tests__/PhabricatorApplicationConfigurationPanelTestCase.php',
     'PhabricatorApplicationDatasource' => 'applications/meta/typeahead/PhabricatorApplicationDatasource.php',
     'PhabricatorApplicationDetailViewController' => 'applications/meta/controller/PhabricatorApplicationDetailViewController.php',
+    'PhabricatorApplicationEditConfiguration' => 'applications/transactions/storage/PhabricatorApplicationEditConfiguration.php',
     'PhabricatorApplicationEditController' => 'applications/meta/controller/PhabricatorApplicationEditController.php',
     'PhabricatorApplicationEditEngine' => 'applications/transactions/editengine/PhabricatorApplicationEditEngine.php',
     'PhabricatorApplicationEditEngineAPIMethod' => 'applications/transactions/editengine/PhabricatorApplicationEditEngineAPIMethod.php',
@@ -2295,6 +2296,7 @@
     'PhabricatorInlineCommentInterface' => 'infrastructure/diff/interface/PhabricatorInlineCommentInterface.php',
     'PhabricatorInlineCommentPreviewController' => 'infrastructure/diff/PhabricatorInlineCommentPreviewController.php',
     'PhabricatorInlineSummaryView' => 'infrastructure/diff/view/PhabricatorInlineSummaryView.php',
+    'PhabricatorInstructionsEditField' => 'applications/transactions/editfield/PhabricatorInstructionsEditField.php',
     'PhabricatorInternationalizationManagementExtractWorkflow' => 'infrastructure/internationalization/management/PhabricatorInternationalizationManagementExtractWorkflow.php',
     'PhabricatorInternationalizationManagementWorkflow' => 'infrastructure/internationalization/management/PhabricatorInternationalizationManagementWorkflow.php',
     'PhabricatorInvalidConfigSetupCheck' => 'applications/config/check/PhabricatorInvalidConfigSetupCheck.php',
@@ -5528,6 +5530,10 @@
     'PhabricatorApplicationConfigurationPanelTestCase' => 'PhabricatorTestCase',
     'PhabricatorApplicationDatasource' => 'PhabricatorTypeaheadDatasource',
     'PhabricatorApplicationDetailViewController' => 'PhabricatorApplicationsController',
+    'PhabricatorApplicationEditConfiguration' => array(
+      'PhabricatorSearchDAO',
+      'PhabricatorPolicyInterface',
+    ),
     'PhabricatorApplicationEditController' => 'PhabricatorApplicationsController',
     'PhabricatorApplicationEditEngine' => 'Phobject',
     'PhabricatorApplicationEditEngineAPIMethod' => 'ConduitAPIMethod',
@@ -6378,6 +6384,7 @@
     'PhabricatorInlineCommentInterface' => 'PhabricatorMarkupInterface',
     'PhabricatorInlineCommentPreviewController' => 'PhabricatorController',
     'PhabricatorInlineSummaryView' => 'AphrontView',
+    'PhabricatorInstructionsEditField' => 'PhabricatorEditField',
     'PhabricatorInternationalizationManagementExtractWorkflow' => 'PhabricatorInternationalizationManagementWorkflow',
     'PhabricatorInternationalizationManagementWorkflow' => 'PhabricatorManagementWorkflow',
     'PhabricatorInvalidConfigSetupCheck' => 'PhabricatorSetupCheck',
diff --git a/src/applications/transactions/editengine/PhabricatorApplicationEditEngine.php b/src/applications/transactions/editengine/PhabricatorApplicationEditEngine.php
--- a/src/applications/transactions/editengine/PhabricatorApplicationEditEngine.php
+++ b/src/applications/transactions/editengine/PhabricatorApplicationEditEngine.php
@@ -184,6 +184,21 @@
       }
     }
 
+    // TODO: This is just silly nonsense for now.
+    $config = id(new PhabricatorApplicationEditConfiguration())
+      ->setProperty(
+        'instructions.head',
+        pht(
+          '(NOTE) **!!CHALLENGE MODE!!!** Can you figure out how to fill out '.
+          'this form?'))
+      ->setProperty(
+        'defaults',
+        array(
+          'text' => 'Feature Request: Natural wood-panel theme (mahogany?).',
+        ));
+
+    $fields = $config->applyConfigurationToFields($this, $fields);
+
     foreach ($fields as $field) {
       $field
         ->setViewer($viewer)
@@ -317,7 +332,7 @@
    * @return bool True if a new object is being created.
    * @task load
    */
-  final protected function getIsCreate() {
+  final public function getIsCreate() {
     return $this->isCreate;
   }
 
diff --git a/src/applications/transactions/editfield/PhabricatorEditField.php b/src/applications/transactions/editfield/PhabricatorEditField.php
--- a/src/applications/transactions/editfield/PhabricatorEditField.php
+++ b/src/applications/transactions/editfield/PhabricatorEditField.php
@@ -13,7 +13,7 @@
   private $metadata = array();
   private $description;
   private $editTypeKey;
-
+  private $isLocked;
 
   public function setKey($key) {
     $this->key = $key;
@@ -69,7 +69,18 @@
     return $this->description;
   }
 
-  abstract protected function newControl();
+  public function setIsLocked($is_locked) {
+    $this->isLocked = $is_locked;
+    return $this;
+  }
+
+  public function getIsLocked() {
+    return $this->isLocked;
+  }
+
+  protected function newControl() {
+    throw new PhutilMethodNotImplementedException();
+  }
 
   protected function renderControl() {
     $control = $this->newControl();
@@ -85,6 +96,10 @@
       $control->setLabel($this->getLabel());
     }
 
+    if ($this->getIsLocked()) {
+      $control->setDisabled(true);
+    }
+
     return $control;
   }
 
@@ -166,6 +181,15 @@
     return $this;
   }
 
+  public function readDefaultValueFromConfiguration($value) {
+    $this->value = $this->getDefaultValueFromConfiguration($value);
+    return $this;
+  }
+
+  protected function getDefaultValueFromConfiguration($value) {
+    return $value;
+  }
+
   protected function getValueFromObject($object) {
     if ($this->hasValue) {
       return $this->value;
diff --git a/src/applications/transactions/editfield/PhabricatorInstructionsEditField.php b/src/applications/transactions/editfield/PhabricatorInstructionsEditField.php
new file mode 100644
--- /dev/null
+++ b/src/applications/transactions/editfield/PhabricatorInstructionsEditField.php
@@ -0,0 +1,10 @@
+<?php
+
+final class PhabricatorInstructionsEditField
+  extends PhabricatorEditField {
+
+  public function appendToForm(AphrontFormView $form) {
+    return $form->appendRemarkupInstructions($this->getValue());
+  }
+
+}
diff --git a/src/applications/transactions/storage/PhabricatorApplicationEditConfiguration.php b/src/applications/transactions/storage/PhabricatorApplicationEditConfiguration.php
new file mode 100644
--- /dev/null
+++ b/src/applications/transactions/storage/PhabricatorApplicationEditConfiguration.php
@@ -0,0 +1,131 @@
+<?php
+
+final class PhabricatorApplicationEditConfiguration
+  extends PhabricatorSearchDAO
+  implements
+    PhabricatorPolicyInterface {
+
+  protected $engineKey;
+  protected $builtinKey;
+  protected $viewPolicy;
+  protected $editPolicy;
+  protected $properties = array();
+  protected $isDisabled = 0;
+
+  public function generatePHID() {
+    // TODO: Proper type.
+    return PhabricatorPHID::generateNewPHID('EDIT');
+  }
+
+  protected function getConfiguration() {
+    return array(
+      self::CONFIG_AUX_PHID => true,
+      self::CONFIG_SERIALIZATION => array(
+        'properties' => self::SERIALIZATION_JSON,
+      ),
+      self::CONFIG_COLUMN_SCHEMA => array(
+        'engineKey' => 'text64',
+        'builtinKey' => 'text64?',
+        'isDisabled' => 'bool',
+      ),
+      self::CONFIG_KEY_SCHEMA => array(
+        'key_engine' => array(
+          'columns' => array('engineKey', 'builtinKey'),
+          'unique' => true,
+        ),
+      ),
+    ) + parent::getConfiguration();
+  }
+
+  public function getProperty($key, $default = null) {
+    return idx($this->properties, $key, $default);
+  }
+
+  public function setProperty($key, $value) {
+    $this->properties[$key] = $value;
+    return $this;
+  }
+
+  public function applyConfigurationToFields(
+    PhabricatorApplicationEditEngine $engine,
+    array $fields) {
+    $fields = mpull($fields, null, 'getKey');
+
+    $values = $this->getProperty('defaults', array());
+    $locked = $this->getProperty('locked', array());
+    foreach ($fields as $key => $field) {
+      if ($engine->getIsCreate()) {
+        if (array_key_exists($key, $values)) {
+          $field->readDefaultValueFromConfiguration($values[$key]);
+        }
+      }
+
+      // Randomly lock half the fields.
+      if (isset($locked[$key]) || mt_rand(0, 1)) {
+        $field->setIsLocked(true);
+      }
+    }
+
+    $fields = $this->reorderFields($fields);
+
+    $head_instructions = $this->getProperty('instructions.head');
+    if (strlen($head_instructions)) {
+      $fields = array(
+        'config.instructions.head' => id(new PhabricatorInstructionsEditField())
+          ->setKey('config.instructions.head')
+          ->setValue($head_instructions),
+      ) + $fields;
+    }
+
+    return $fields;
+  }
+
+  private function reorderFields(array $fields) {
+    // Shuffle fields randomly.
+    $keys = array_keys($fields);
+    shuffle($keys);
+    $fields = array_select_keys($fields, $keys);
+
+    // Now, move locked fields to the bottom.
+    $head = array();
+    $tail = array();
+    foreach ($fields as $key => $field) {
+      if (!$field->getIsLocked()) {
+        $head[$key] = $field;
+      } else {
+        $tail[$key] = $field;
+      }
+    }
+
+    return $head + $tail;
+  }
+
+/* -(  PhabricatorPolicyInterface Implementation  )-------------------------- */
+
+
+  public function getCapabilities() {
+    return array(
+      PhabricatorPolicyCapability::CAN_VIEW,
+      PhabricatorPolicyCapability::CAN_EDIT,
+    );
+  }
+
+  public function getPolicy($capability) {
+    switch ($capability) {
+      case PhabricatorPolicyCapability::CAN_VIEW:
+        return $this->getViewPolicy();
+      case PhabricatorPolicyCapability::CAN_EDIT:
+        return $this->getEditPolicy();
+    }
+  }
+
+  public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
+    return false;
+  }
+
+  public function describeAutomaticCapability($capability) {
+    return null;
+  }
+
+
+}