diff --git a/resources/sql/autopatches/20190412.herald.01.rebuild.php b/resources/sql/autopatches/20190412.herald.01.rebuild.php
new file mode 100644
--- /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
--- a/src/applications/differential/herald/DifferentialReviewersAddBlockingReviewersHeraldAction.php
+++ b/src/applications/differential/herald/DifferentialReviewersAddBlockingReviewersHeraldAction.php
@@ -29,4 +29,8 @@
     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
--- a/src/applications/differential/herald/DifferentialReviewersAddReviewersHeraldAction.php
+++ b/src/applications/differential/herald/DifferentialReviewersAddReviewersHeraldAction.php
@@ -29,4 +29,8 @@
     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
--- a/src/applications/diffusion/herald/DiffusionAuditorsAddAuditorsHeraldAction.php
+++ b/src/applications/diffusion/herald/DiffusionAuditorsAddAuditorsHeraldAction.php
@@ -30,4 +30,8 @@
     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
--- a/src/applications/owners/controller/PhabricatorOwnersDetailController.php
+++ b/src/applications/owners/controller/PhabricatorOwnersDetailController.php
@@ -144,6 +144,8 @@
     $crumbs->addTextCrumb($package->getMonogram());
     $crumbs->setBorder(true);
 
+    $rules_view = $this->newRulesView($package);
+
     $timeline = $this->buildTransactionTimeline(
       $package,
       new PhabricatorOwnersPackageTransactionQuery());
@@ -154,6 +156,7 @@
       ->setCurtain($curtain)
       ->setMainColumn(array(
         $this->renderPathsTable($paths, $repositories),
+        $rules_view,
         $commit_panels,
         $timeline,
       ))
@@ -345,4 +348,55 @@
     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
--- a/src/applications/subscriptions/herald/PhabricatorSubscriptionsAddSubscribersHeraldAction.php
+++ b/src/applications/subscriptions/herald/PhabricatorSubscriptionsAddSubscribersHeraldAction.php
@@ -29,4 +29,8 @@
     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
--- a/src/applications/subscriptions/herald/PhabricatorSubscriptionsRemoveSubscribersHeraldAction.php
+++ b/src/applications/subscriptions/herald/PhabricatorSubscriptionsRemoveSubscribersHeraldAction.php
@@ -29,4 +29,8 @@
     return pht('Remove subscribers: %s.', $this->renderHandleList($value));
   }
 
+  public function getPHIDsAffectedByAction(HeraldActionRecord $record) {
+    return $record->getTarget();
+  }
+
 }