diff --git a/Mage.Sets/src/mage/cards/j/JaceArchitectOfThought.java b/Mage.Sets/src/mage/cards/j/JaceArchitectOfThought.java
index f5f54108041..fbf022f466b 100644
--- a/Mage.Sets/src/mage/cards/j/JaceArchitectOfThought.java
+++ b/Mage.Sets/src/mage/cards/j/JaceArchitectOfThought.java
@@ -245,6 +245,10 @@ class JaceArchitectOfThoughtEffect3 extends OneShotEffect {
         if (controller == null || sourcePermanent == null) {
             return false;
         }
+        if (controller.chooseUse(Outcome.Benefit, "Look at all players' libraries before card select?", null, game)) {
+            game.informPlayers(controller.getLogName() + " is looking at all players' libraries.");
+            controller.lookAtAllLibraries(source, game);
+        }
         List<UUID> playerList = new ArrayList<>();
         playerList.addAll(game.getState().getPlayersInRange(controller.getId(), game));
         Set<UUID> checkList = new HashSet<>();
diff --git a/Mage.Tests/src/test/java/org/mage/test/player/TestPlayer.java b/Mage.Tests/src/test/java/org/mage/test/player/TestPlayer.java
index 46f890f9e27..e6bf95d3973 100644
--- a/Mage.Tests/src/test/java/org/mage/test/player/TestPlayer.java
+++ b/Mage.Tests/src/test/java/org/mage/test/player/TestPlayer.java
@@ -2309,8 +2309,12 @@ public class TestPlayer implements Player {
     }
 
     @Override
-    public boolean flipCoin(Game game
-    ) {
+    public void lookAtAllLibraries(Ability source, Game game) {
+        computerPlayer.lookAtAllLibraries(source, game);
+    }
+
+    @Override
+    public boolean flipCoin(Game game) {
         return computerPlayer.flipCoin(game);
     }
 
diff --git a/Mage.Tests/src/test/java/org/mage/test/stub/PlayerStub.java b/Mage.Tests/src/test/java/org/mage/test/stub/PlayerStub.java
index 810c068ccf6..360bd942514 100644
--- a/Mage.Tests/src/test/java/org/mage/test/stub/PlayerStub.java
+++ b/Mage.Tests/src/test/java/org/mage/test/stub/PlayerStub.java
@@ -597,6 +597,9 @@ public class PlayerStub implements Player {
         return false;
     }
 
+    @Override
+    public void lookAtAllLibraries(Ability source, Game game) {}
+
     @Override
     public boolean canPlayLand() {
         return false;
diff --git a/Mage/src/main/java/mage/players/Player.java b/Mage/src/main/java/mage/players/Player.java
index 1aa52abe55d..dab98647ec4 100644
--- a/Mage/src/main/java/mage/players/Player.java
+++ b/Mage/src/main/java/mage/players/Player.java
@@ -349,6 +349,15 @@ public interface Player extends MageItem, Copyable<Player> {
      */
     boolean searchLibrary(TargetCardInLibrary target, Game game, UUID targetPlayerId, boolean triggerEvents);
 
+    /**
+     * Reveals all players' libraries. Useful for abilities like Jace, Architect of Thought's -8
+     * that have effects that require information from all libraries.
+     * @param source
+     * @param game
+     * @return
+     */
+    void lookAtAllLibraries(Ability source, Game game);
+
     boolean canPlayLand();
 
     /**
diff --git a/Mage/src/main/java/mage/players/PlayerImpl.java b/Mage/src/main/java/mage/players/PlayerImpl.java
index ec355521d91..9e93659dbf1 100644
--- a/Mage/src/main/java/mage/players/PlayerImpl.java
+++ b/Mage/src/main/java/mage/players/PlayerImpl.java
@@ -2488,6 +2488,17 @@ public abstract class PlayerImpl implements Player, Serializable {
         return false;
     }
 
+    @Override
+    public void lookAtAllLibraries(Ability source, Game game) {
+        for(UUID playerId : game.getState().getPlayersInRange(this.getId(), game)){
+            Player player = game.getPlayer(playerId);
+            String playerName = this.getName().equals(player.getName()) ? "Your " : player.getName() + "'s ";
+            playerName += "library";
+            Cards cardsInLibrary = new CardsImpl(player.getLibrary().getTopCards(game, player.getLibrary().size()));
+            lookAtCards(playerName, cardsInLibrary, game);
+        }
+    }
+
     private boolean handleLibraryCastableCards(Library library, Game game, UUID targetPlayerId) {
         // for handling Panglacial Wurm
         boolean alreadyChosenUse = false;