diff --git a/resources/sql/autopatches/20190412.herald.01.rebuild.php b/resources/sql/autopatches/20190412.herald.01.rebuild.php
new file mode 100644
index 0000000000..a29b7d2f45
--- /dev/null
+++ b/resources/sql/autopatches/20190412.herald.01.rebuild.php
@@ -0,0 +1,3 @@
+<?php
+
+PhabricatorRebuildIndexesWorker::rebuildObjectsWithQuery('HeraldRuleQuery');
diff --git a/src/applications/differential/herald/DifferentialReviewersAddBlockingReviewersHeraldAction.php b/src/applications/differential/herald/DifferentialReviewersAddBlockingReviewersHeraldAction.php
index 16d07e5240..c920253dae 100644
--- a/src/applications/differential/herald/DifferentialReviewersAddBlockingReviewersHeraldAction.php
+++ b/src/applications/differential/herald/DifferentialReviewersAddBlockingReviewersHeraldAction.php
@@ -1,32 +1,36 @@
 <?php
 
 final class DifferentialReviewersAddBlockingReviewersHeraldAction
   extends DifferentialReviewersHeraldAction {
 
   const ACTIONCONST = 'differential.reviewers.blocking';
 
   public function getHeraldActionName() {
     return pht('Add blocking reviewers');
   }
 
   public function supportsRuleType($rule_type) {
     return ($rule_type != HeraldRuleTypeConfig::RULE_TYPE_PERSONAL);
   }
 
   public function applyEffect($object, HeraldEffect $effect) {
     return $this->applyReviewers($effect->getTarget(), $is_blocking = true);
   }
 
   public function getHeraldActionStandardType() {
     return self::STANDARD_PHID_LIST;
   }
 
   protected function getDatasource() {
     return new DiffusionAuditorDatasource();
   }
 
   public function renderActionDescription($value) {
     return pht('Add blocking reviewers: %s.', $this->renderHandleList($value));
   }
 
+  public function getPHIDsAffectedByAction(HeraldActionRecord $record) {
+    return $record->getTarget();
+  }
+
 }
diff --git a/src/applications/differential/herald/DifferentialReviewersAddReviewersHeraldAction.php b/src/applications/differential/herald/DifferentialReviewersAddReviewersHeraldAction.php
index d39a4370c5..60e64c750d 100644
--- a/src/applications/differential/herald/DifferentialReviewersAddReviewersHeraldAction.php
+++ b/src/applications/differential/herald/DifferentialReviewersAddReviewersHeraldAction.php
@@ -1,32 +1,36 @@
 <?php
 
 final class DifferentialReviewersAddReviewersHeraldAction
   extends DifferentialReviewersHeraldAction {
 
   const ACTIONCONST = 'differential.reviewers.add';
 
   public function getHeraldActionName() {
     return pht('Add reviewers');
   }
 
   public function supportsRuleType($rule_type) {
     return ($rule_type != HeraldRuleTypeConfig::RULE_TYPE_PERSONAL);
   }
 
   public function applyEffect($object, HeraldEffect $effect) {
     return $this->applyReviewers($effect->getTarget(), $is_blocking = false);
   }
 
   public function getHeraldActionStandardType() {
     return self::STANDARD_PHID_LIST;
   }
 
   protected function getDatasource() {
     return new DiffusionAuditorDatasource();
   }
 
   public function renderActionDescription($value) {
     return pht('Add reviewers: %s.', $this->renderHandleList($value));
   }
 
+  public function getPHIDsAffectedByAction(HeraldActionRecord $record) {
+    return $record->getTarget();
+  }
+
 }
diff --git a/src/applications/diffusion/herald/DiffusionAuditorsAddAuditorsHeraldAction.php b/src/applications/diffusion/herald/DiffusionAuditorsAddAuditorsHeraldAction.php
index 36b01b96f8..f895847d4a 100644
--- a/src/applications/diffusion/herald/DiffusionAuditorsAddAuditorsHeraldAction.php
+++ b/src/applications/diffusion/herald/DiffusionAuditorsAddAuditorsHeraldAction.php
@@ -1,33 +1,37 @@
 <?php
 
 final class DiffusionAuditorsAddAuditorsHeraldAction
   extends DiffusionAuditorsHeraldAction {
 
   const ACTIONCONST = 'diffusion.auditors.add';
 
   public function getHeraldActionName() {
     return pht('Add auditors');
   }
 
   public function supportsRuleType($rule_type) {
     return ($rule_type != HeraldRuleTypeConfig::RULE_TYPE_PERSONAL);
   }
 
   public function applyEffect($object, HeraldEffect $effect) {
     $rule = $effect->getRule();
     return $this->applyAuditors($effect->getTarget(), $rule);
   }
 
   public function getHeraldActionStandardType() {
     return self::STANDARD_PHID_LIST;
   }
 
   protected function getDatasource() {
     return new DiffusionAuditorDatasource();
   }
 
   public function renderActionDescription($value) {
     return pht('Add auditors: %s.', $this->renderHandleList($value));
   }
 
+  public function getPHIDsAffectedByAction(HeraldActionRecord $record) {
+    return $record->getTarget();
+  }
+
 }
diff --git a/src/applications/owners/controller/PhabricatorOwnersDetailController.php b/src/applications/owners/controller/PhabricatorOwnersDetailController.php
index c458e4dbd1..3aace69074 100644
--- a/src/applications/owners/controller/PhabricatorOwnersDetailController.php
+++ b/src/applications/owners/controller/PhabricatorOwnersDetailController.php
@@ -1,348 +1,402 @@
 <?php
 
 final class PhabricatorOwnersDetailController
   extends PhabricatorOwnersController {
 
   public function shouldAllowPublic() {
     return true;
   }
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $this->getViewer();
 
     $package = id(new PhabricatorOwnersPackageQuery())
       ->setViewer($viewer)
       ->withIDs(array($request->getURIData('id')))
       ->needPaths(true)
       ->executeOne();
     if (!$package) {
       return new Aphront404Response();
     }
 
     $paths = $package->getPaths();
 
     $repository_phids = array();
     foreach ($paths as $path) {
       $repository_phids[$path->getRepositoryPHID()] = true;
     }
 
     if ($repository_phids) {
       $repositories = id(new PhabricatorRepositoryQuery())
         ->setViewer($viewer)
         ->withPHIDs(array_keys($repository_phids))
         ->execute();
       $repositories = mpull($repositories, null, 'getPHID');
     } else {
       $repositories = array();
     }
 
     $field_list = PhabricatorCustomField::getObjectFields(
       $package,
       PhabricatorCustomField::ROLE_VIEW);
     $field_list
       ->setViewer($viewer)
       ->readFieldsFromStorage($package);
 
     $curtain = $this->buildCurtain($package);
     $details = $this->buildPackageDetailView($package, $field_list);
 
     if ($package->isArchived()) {
       $header_icon = 'fa-ban';
       $header_name = pht('Archived');
       $header_color = 'dark';
     } else {
       $header_icon = 'fa-check';
       $header_name = pht('Active');
       $header_color = 'bluegrey';
     }
 
     $header = id(new PHUIHeaderView())
       ->setUser($viewer)
       ->setHeader($package->getName())
       ->setStatus($header_icon, $header_color, $header_name)
       ->setPolicyObject($package)
       ->setHeaderIcon('fa-gift');
 
     $commit_views = array();
 
     $params = array(
       'package' => $package->getPHID(),
     );
 
     $commit_uri = new PhutilURI('/diffusion/commit/', $params);
 
     $status_concern = DiffusionCommitAuditStatus::CONCERN_RAISED;
 
     $attention_commits = id(new DiffusionCommitQuery())
       ->setViewer($request->getUser())
       ->withPackagePHIDs(array($package->getPHID()))
       ->withStatuses(
         array(
           $status_concern,
         ))
       ->needCommitData(true)
       ->needAuditRequests(true)
       ->setLimit(10)
       ->execute();
     $view = id(new PhabricatorAuditListView())
       ->setUser($viewer)
       ->setNoDataString(pht('This package has no open problem commits.'))
       ->setCommits($attention_commits);
 
     $commit_views[] = array(
       'view'    => $view,
       'header'  => pht('Needs Attention'),
       'icon'    => 'fa-warning',
       'button'  => id(new PHUIButtonView())
         ->setTag('a')
         ->setHref($commit_uri->alter('status', $status_concern))
         ->setIcon('fa-list-ul')
         ->setText(pht('View All')),
     );
 
     $all_commits = id(new DiffusionCommitQuery())
       ->setViewer($request->getUser())
       ->withPackagePHIDs(array($package->getPHID()))
       ->needCommitData(true)
       ->needAuditRequests(true)
       ->setLimit(25)
       ->execute();
 
     $view = id(new PhabricatorAuditListView())
       ->setUser($viewer)
       ->setCommits($all_commits)
       ->setNoDataString(pht('No commits in this package.'));
 
     $commit_views[] = array(
       'view'    => $view,
       'header'  => pht('Recent Commits'),
       'icon'    => 'fa-code',
       'button'  => id(new PHUIButtonView())
         ->setTag('a')
         ->setHref($commit_uri)
         ->setIcon('fa-list-ul')
         ->setText(pht('View All')),
     );
 
     $commit_panels = array();
     foreach ($commit_views as $commit_view) {
       $commit_panel = id(new PHUIObjectBoxView())
         ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY);
       $commit_header = id(new PHUIHeaderView())
         ->setHeader($commit_view['header'])
         ->setHeaderIcon($commit_view['icon']);
       if (isset($commit_view['button'])) {
         $commit_header->addActionLink($commit_view['button']);
       }
       $commit_panel->setHeader($commit_header);
       $commit_panel->appendChild($commit_view['view']);
 
       $commit_panels[] = $commit_panel;
     }
 
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->addTextCrumb($package->getMonogram());
     $crumbs->setBorder(true);
 
+    $rules_view = $this->newRulesView($package);
+
     $timeline = $this->buildTransactionTimeline(
       $package,
       new PhabricatorOwnersPackageTransactionQuery());
     $timeline->setShouldTerminate(true);
 
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setCurtain($curtain)
       ->setMainColumn(array(
         $this->renderPathsTable($paths, $repositories),
+        $rules_view,
         $commit_panels,
         $timeline,
       ))
       ->addPropertySection(pht('Details'), $details);
 
     return $this->newPage()
       ->setTitle($package->getName())
       ->setCrumbs($crumbs)
       ->appendChild($view);
   }
 
   private function buildPackageDetailView(
     PhabricatorOwnersPackage $package,
     PhabricatorCustomFieldList $field_list) {
 
     $viewer = $this->getViewer();
     $view = id(new PHUIPropertyListView())
       ->setUser($viewer);
 
     $owners = $package->getOwners();
     if ($owners) {
       $owner_list = $viewer->renderHandleList(mpull($owners, 'getUserPHID'));
     } else {
       $owner_list = phutil_tag('em', array(), pht('None'));
     }
     $view->addProperty(pht('Owners'), $owner_list);
 
 
     $dominion = $package->getDominion();
     $dominion_map = PhabricatorOwnersPackage::getDominionOptionsMap();
     $spec = idx($dominion_map, $dominion, array());
     $name = idx($spec, 'short', $dominion);
     $view->addProperty(pht('Dominion'), $name);
 
     $auto = $package->getAutoReview();
     $autoreview_map = PhabricatorOwnersPackage::getAutoreviewOptionsMap();
     $spec = idx($autoreview_map, $auto, array());
     $name = idx($spec, 'name', $auto);
     $view->addProperty(pht('Auto Review'), $name);
 
     $rule = $package->newAuditingRule();
     $view->addProperty(pht('Auditing'), $rule->getDisplayName());
 
     $ignored = $package->getIgnoredPathAttributes();
     $ignored = array_keys($ignored);
     if ($ignored) {
       $ignored = implode(', ', $ignored);
     } else {
       $ignored = phutil_tag('em', array(), pht('None'));
     }
 
     $view->addProperty(pht('Ignored Attributes'), $ignored);
 
     $description = $package->getDescription();
     if (strlen($description)) {
       $description = new PHUIRemarkupView($viewer, $description);
       $view->addSectionHeader(pht('Description'));
       $view->addTextContent($description);
     }
 
     $field_list->appendFieldsToPropertyList(
       $package,
       $viewer,
       $view);
 
     return $view;
   }
 
   private function buildCurtain(PhabricatorOwnersPackage $package) {
     $viewer = $this->getViewer();
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $package,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $id = $package->getID();
     $edit_uri = $this->getApplicationURI("/edit/{$id}/");
     $paths_uri = $this->getApplicationURI("/paths/{$id}/");
 
     $curtain = $this->newCurtainView($package);
 
     $curtain->addAction(
       id(new PhabricatorActionView())
         ->setName(pht('Edit Package'))
         ->setIcon('fa-pencil')
         ->setDisabled(!$can_edit)
         ->setWorkflow(!$can_edit)
         ->setHref($edit_uri));
 
     if ($package->isArchived()) {
       $curtain->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Activate Package'))
           ->setIcon('fa-check')
           ->setDisabled(!$can_edit)
           ->setWorkflow($can_edit)
           ->setHref($this->getApplicationURI("/archive/{$id}/")));
     } else {
       $curtain->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Archive Package'))
           ->setIcon('fa-ban')
           ->setDisabled(!$can_edit)
           ->setWorkflow($can_edit)
           ->setHref($this->getApplicationURI("/archive/{$id}/")));
     }
 
     $curtain->addAction(
       id(new PhabricatorActionView())
         ->setName(pht('Edit Paths'))
         ->setIcon('fa-folder-open')
         ->setDisabled(!$can_edit)
         ->setWorkflow(!$can_edit)
         ->setHref($paths_uri));
 
     return $curtain;
   }
 
   private function renderPathsTable(array $paths, array $repositories) {
     $viewer = $this->getViewer();
 
     $rows = array();
     foreach ($paths as $path) {
       $repo = idx($repositories, $path->getRepositoryPHID());
       if (!$repo) {
         continue;
       }
       $href = $repo->generateURI(
         array(
           'branch'   => $repo->getDefaultBranch(),
           'path'     => $path->getPathDisplay(),
           'action'   => 'browse',
         ));
 
       $path_link = phutil_tag(
         'a',
         array(
           'href' => (string)$href,
         ),
         $path->getPathDisplay());
 
       $rows[] = array(
         ($path->getExcluded() ? '-' : '+'),
         $repo->getName(),
         $path_link,
       );
     }
 
     $info = null;
     if (!$paths) {
       $info = id(new PHUIInfoView())
         ->setSeverity(PHUIInfoView::SEVERITY_WARNING)
         ->setErrors(
           array(
             pht(
               'This package does not contain any paths yet. Use '.
               '"Edit Paths" to add some.'),
           ));
     }
 
     $table = id(new AphrontTableView($rows))
       ->setHeaders(
         array(
           null,
           pht('Repository'),
           pht('Path'),
         ))
       ->setColumnClasses(
         array(
           null,
           null,
           'wide',
         ));
 
     if ($info) {
       $table->setNotice($info);
     }
 
     $header = id(new PHUIHeaderView())
       ->setHeader(pht('Paths'))
       ->setHeaderIcon('fa-folder-open');
 
     $box = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->setTable($table);
 
     return $box;
   }
 
+  private function newRulesView(PhabricatorOwnersPackage $package) {
+    $viewer = $this->getViewer();
+
+    $limit = 10;
+    $rules = id(new HeraldRuleQuery())
+      ->setViewer($viewer)
+      ->withDisabled(false)
+      ->withAffectedObjectPHIDs(array($package->getPHID()))
+      ->needValidateAuthors(true)
+      ->setLimit($limit + 1)
+      ->execute();
+
+    $more_results = (count($rules) > $limit);
+    $rules = array_slice($rules, 0, $limit);
+
+    $list = id(new HeraldRuleListView())
+      ->setViewer($viewer)
+      ->setRules($rules)
+      ->newObjectList();
+
+    $list->setNoDataString(
+      pht(
+        'No active Herald rules add this package as an auditor, reviewer, '.
+        'or subscriber.'));
+
+    $more_href = new PhutilURI(
+      '/herald/',
+      array('affectedPHID' => $package->getPHID()));
+
+    if ($more_results) {
+      $list->newTailButton()
+        ->setHref($more_href);
+    }
+
+    $more_link = id(new PHUIButtonView())
+      ->setTag('a')
+      ->setIcon('fa-list-ul')
+      ->setText(pht('View All Rules'))
+      ->setHref($more_href);
+
+    $header = id(new PHUIHeaderView())
+      ->setHeader(pht('Affected By Herald Rules'))
+      ->setHeaderIcon(id(new PhabricatorHeraldApplication())->getIcon())
+      ->addActionLink($more_link);
+
+    return id(new PHUIObjectBoxView())
+      ->setHeader($header)
+      ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
+      ->appendChild($list);
+  }
+
 }
diff --git a/src/applications/subscriptions/herald/PhabricatorSubscriptionsAddSubscribersHeraldAction.php b/src/applications/subscriptions/herald/PhabricatorSubscriptionsAddSubscribersHeraldAction.php
index 14f72d313a..3604d368fc 100644
--- a/src/applications/subscriptions/herald/PhabricatorSubscriptionsAddSubscribersHeraldAction.php
+++ b/src/applications/subscriptions/herald/PhabricatorSubscriptionsAddSubscribersHeraldAction.php
@@ -1,32 +1,36 @@
 <?php
 
 final class PhabricatorSubscriptionsAddSubscribersHeraldAction
   extends PhabricatorSubscriptionsHeraldAction {
 
   const ACTIONCONST = 'subscribers.add';
 
   public function getHeraldActionName() {
     return pht('Add subscribers');
   }
 
   public function supportsRuleType($rule_type) {
     return ($rule_type != HeraldRuleTypeConfig::RULE_TYPE_PERSONAL);
   }
 
   public function applyEffect($object, HeraldEffect $effect) {
     return $this->applySubscribe($effect->getTarget(), $is_add = true);
   }
 
   public function getHeraldActionStandardType() {
     return self::STANDARD_PHID_LIST;
   }
 
   protected function getDatasource() {
     return new PhabricatorMetaMTAMailableDatasource();
   }
 
   public function renderActionDescription($value) {
     return pht('Add subscribers: %s.', $this->renderHandleList($value));
   }
 
+  public function getPHIDsAffectedByAction(HeraldActionRecord $record) {
+    return $record->getTarget();
+  }
+
 }
diff --git a/src/applications/subscriptions/herald/PhabricatorSubscriptionsRemoveSubscribersHeraldAction.php b/src/applications/subscriptions/herald/PhabricatorSubscriptionsRemoveSubscribersHeraldAction.php
index 67ece2cb72..7b55e6b5aa 100644
--- a/src/applications/subscriptions/herald/PhabricatorSubscriptionsRemoveSubscribersHeraldAction.php
+++ b/src/applications/subscriptions/herald/PhabricatorSubscriptionsRemoveSubscribersHeraldAction.php
@@ -1,32 +1,36 @@
 <?php
 
 final class PhabricatorSubscriptionsRemoveSubscribersHeraldAction
   extends PhabricatorSubscriptionsHeraldAction {
 
   const ACTIONCONST = 'subscribers.remove';
 
   public function getHeraldActionName() {
     return pht('Remove subscribers');
   }
 
   public function supportsRuleType($rule_type) {
     return ($rule_type != HeraldRuleTypeConfig::RULE_TYPE_PERSONAL);
   }
 
   public function applyEffect($object, HeraldEffect $effect) {
     return $this->applySubscribe($effect->getTarget(), $is_add = false);
   }
 
   public function getHeraldActionStandardType() {
     return self::STANDARD_PHID_LIST;
   }
 
   protected function getDatasource() {
     return new PhabricatorMetaMTAMailableDatasource();
   }
 
   public function renderActionDescription($value) {
     return pht('Remove subscribers: %s.', $this->renderHandleList($value));
   }
 
+  public function getPHIDsAffectedByAction(HeraldActionRecord $record) {
+    return $record->getTarget();
+  }
+
 }