* Fixed a problem that you can see the second card from top of libraray while able to cancel the cast of the top card (fixes #3196).

Mage/src/main/java/mage/abilities/effects/common/continuous/PlayTheTopCardEffect.java

@@ -32,7 +32,6 @@ import mage.abilities.Ability;
 import mage.abilities.effects.AsThoughEffectImpl;
 import mage.cards.Card;
 import mage.constants.AsThoughEffectType;
-import mage.constants.CardType;
 import mage.constants.Duration;
 import mage.constants.Outcome;
 import mage.filter.FilterCard;

Mage/src/main/java/mage/abilities/effects/common/continuous/PlayWithTheTopCardRevealedEffect.java

@@ -34,7 +34,10 @@ import mage.constants.Duration;
 import mage.constants.Layer;
 import mage.constants.Outcome;
 import mage.constants.SubLayer;
+import mage.constants.Zone;
 import mage.game.Game;
+import mage.game.stack.Spell;
+import mage.game.stack.StackObject;
 import mage.players.Player;
 
 /**
@@ -70,11 +73,11 @@ public class PlayWithTheTopCardRevealedEffect extends ContinuousEffectImpl {
             if (allPlayers) {
                 for (UUID playerId : game.getState().getPlayersInRange(controller.getId(), game)) {
                     Player player = game.getPlayer(playerId);
-                    if (player != null) {
+                    if (player != null && !isCastFromPlayersLibrary(game, playerId)) {
                         player.setTopCardRevealed(true);
                     }
                 }
-            } else {
+            } else if (!isCastFromPlayersLibrary(game, controller.getId())) {
                 controller.setTopCardRevealed(true);
             }
             return true;
@@ -82,6 +85,16 @@ public class PlayWithTheTopCardRevealedEffect extends ContinuousEffectImpl {
         return false;
     }
 
+    boolean isCastFromPlayersLibrary(Game game, UUID playerId) {
+        if (!game.getStack().isEmpty()) {
+            StackObject stackObject = game.getStack().getLast();
+            return stackObject instanceof Spell
+                    && !((Spell) stackObject).isDoneActivatingManaAbilities()
+                    && Zone.LIBRARY.equals(((Spell) stackObject).getFromZone());
+        }
+        return false;
+    }
+
     @Override
     public PlayWithTheTopCardRevealedEffect copy() {
         return new PlayWithTheTopCardRevealedEffect(this);

Mage/src/main/java/mage/game/stack/Spell.java

@@ -138,6 +138,7 @@ public class Spell extends StackObjImpl implements Card {
     }
 
     public boolean activate(Game game, boolean noMana) {
+        setDoneActivatingManaAbilities(false); // Used for e.g. improvise
         if (!spellAbilities.get(0).activate(game, noMana)) {
             return false;
         }
@@ -157,7 +158,7 @@ public class Spell extends StackObjImpl implements Card {
                 }
             }
         }
-        setDoneActivatingManaAbilities(false); // can be activated again maybe during the resolution of the spell (e.g. Metallic Rebuke)
+        setDoneActivatingManaAbilities(true); // can be activated again maybe during the resolution of the spell (e.g. Metallic Rebuke)
         return true;
     }