diff --git a/Mage.Sets/src/mage/cards/p/PhabineBosssConfidant.java b/Mage.Sets/src/mage/cards/p/PhabineBosssConfidant.java
index 9d759799046..80e780d9dc3 100644
--- a/Mage.Sets/src/mage/cards/p/PhabineBosssConfidant.java
+++ b/Mage.Sets/src/mage/cards/p/PhabineBosssConfidant.java
@@ -5,6 +5,8 @@ import mage.abilities.Ability;
 import mage.abilities.common.BeginningOfCombatTriggeredAbility;
 import mage.abilities.common.SimpleStaticAbility;
 import mage.abilities.dynamicvalue.common.ParleyCount;
+import mage.abilities.effects.ContinuousEffect;
+import mage.abilities.effects.ContinuousEffectImpl;
 import mage.abilities.effects.Effect;
 import mage.abilities.effects.OneShotEffect;
 import mage.abilities.effects.common.DrawCardAllEffect;
@@ -94,7 +96,7 @@ class PhabineBosssConfidantParleyEffect extends OneShotEffect {
             return false;
         }
 
-        int landCount = ParleyCount.getInstance().calculate(game, source, this);
+        int nonLandCount = ParleyCount.getInstance().calculate(game, source, this);
         int nonEmptyLibraries = 0;
         for (UUID playerID : game.getState().getPlayersInRange(controller.getId(), game)) {
             Player player = game.getPlayer(playerID);
@@ -102,16 +104,17 @@ class PhabineBosssConfidantParleyEffect extends OneShotEffect {
                 nonEmptyLibraries++;
             }
         }
-        int nonLandCount = nonEmptyLibraries - landCount;
+        int landCount = nonEmptyLibraries - nonLandCount;
 
         if (landCount > 0) {
             Token citizenToken = new CitizenGreenWhiteToken();
             citizenToken.putOntoBattlefield(landCount, game, source, source.getControllerId(), false, false);
+            game.applyEffects();
         }
 
         if (nonLandCount > 0) {
-            Effect boostEffect = new BoostControlledEffect(nonLandCount, nonLandCount, Duration.EndOfTurn);
-            boostEffect.apply(game, source);
+            BoostControlledEffect boostEffect = new BoostControlledEffect(nonLandCount, nonLandCount, Duration.EndOfTurn);
+            game.addEffect(boostEffect, source);
         }
 
         return true;
diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/single/ncc/PhabineBosssConfidantTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/single/ncc/PhabineBosssConfidantTest.java
new file mode 100644
index 00000000000..b6a1aa2b14d
--- /dev/null
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/single/ncc/PhabineBosssConfidantTest.java
@@ -0,0 +1,38 @@
+package org.mage.test.cards.single.ncc;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestCommander4Players;
+
+/**
+ * {@link mage.cards.p.PhabineBosssConfidant Phabine, Boss's Confidant}
+ * {3}{R}{G}{W}
+ * Legendary Creature — Cat Advisor
+ * Creature tokens you control have haste.
+ * Parley — At the beginning of combat on your turn, each player reveals the top card of their library.
+ *          For each land card revealed this way, you create a 1/1 green and white Citizen creature token.
+ *          Then creatures you control get +1/+1 until end of turn for each nonland card revealed this way.
+ *          Then each player draws a card.
+ */
+public class PhabineBosssConfidantTest extends CardTestCommander4Players {
+    String phabineBosssConfidant = "Phabine, Boss's Confidant";
+
+    /**
+     * Reported bug: https://github.com/magefree/mage/issues/9603
+     *      The "creatures you control get +1/+1 until end of turn" part of Phabine's trigger never works.
+     */
+    @Test
+    public void boostWorks() {
+        addCard(Zone.BATTLEFIELD, playerA, phabineBosssConfidant);
+        // Creature to trigger the +1/+1 part of the effect
+        addCard(Zone.LIBRARY, playerB, "Silvercoat Lion");
+
+        skipInitShuffling();
+        setStopAt(1, PhaseStep.POSTCOMBAT_MAIN);
+        execute();
+
+        assertPermanentCount(playerA, "Citizen Token", 3);
+        assertPowerToughness(playerA, "Citizen Token", 2, 2);
+    }
+}
diff --git a/Mage/src/main/java/mage/abilities/dynamicvalue/common/ParleyCount.java b/Mage/src/main/java/mage/abilities/dynamicvalue/common/ParleyCount.java
index 666724c0c42..c22df30a266 100644
--- a/Mage/src/main/java/mage/abilities/dynamicvalue/common/ParleyCount.java
+++ b/Mage/src/main/java/mage/abilities/dynamicvalue/common/ParleyCount.java
@@ -16,6 +16,8 @@ import mage.players.Player;
 /**
  * Don't use this for continuous effects because it applies a reveal effect!
  *
+ * Calculate returns the number of nonland cards revealed.
+ *
  * @author LevelX2
  */
 public class ParleyCount implements DynamicValue, MageSingleton {