* Gratuitous Violence - FIxed that if the damage of a creature with lifelink was doubeled only the non doubled amount was added to life.

Mage.Sets/src/mage/cards/o/ObNixilisTheFallen.java

@@ -25,19 +25,17 @@
  *  authors and should not be interpreted as representing official policies, either expressed
  *  or implied, of BetaSteward_at_googlemail.com.
  */
-
 package mage.cards.o;
 
 import java.util.UUID;
-
-import mage.constants.CardType;
 import mage.MageInt;
 import mage.abilities.Ability;
 import mage.abilities.common.LandfallAbility;
-import mage.abilities.effects.common.counter.AddCountersSourceEffect;
 import mage.abilities.effects.common.LoseLifeTargetEffect;
+import mage.abilities.effects.common.counter.AddCountersSourceEffect;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
+import mage.constants.CardType;
 import mage.counters.CounterType;
 import mage.target.TargetPlayer;
 
@@ -55,6 +53,8 @@ public class ObNixilisTheFallen extends CardImpl {
         this.power = new MageInt(3);
         this.toughness = new MageInt(3);
 
+        // Landfall - Whenever a land enters the battlefield under your control, you may have target player lose 3 life.
+        // If you do, put three +1/+1 counters on Ob Nixilis, the Fallen.
         Ability ability = new LandfallAbility(new LoseLifeTargetEffect(3), true);
         ability.addEffect(new AddCountersSourceEffect(CounterType.P1P1.createInstance(3)));
         ability.addTarget(new TargetPlayer());

Mage.Tests/src/test/java/org/mage/test/cards/replacement/DamageEffectsTest.java

@@ -0,0 +1,98 @@
+/*
+ *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without modification, are
+ *  permitted provided that the following conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *     2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are those of the
+ *  authors and should not be interpreted as representing official policies, either expressed
+ *  or implied, of BetaSteward_at_googlemail.com.
+ */
+package org.mage.test.cards.replacement;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ *
+ * @author LevelX2
+ */
+public class DamageEffectsTest extends CardTestPlayerBase {
+
+    /**
+     * Just encountered another bug. With Wurmcoil Engine out and with a
+     * Gratuitous Violence on the field, I only gained 6 life on blocking rather
+     * than 12 life.
+     */
+    @Test
+    public void testDamageIsDoubledWithLifelink() {
+        // Landfall - Whenever a land enters the battlefield under your control, you may have target player lose 3 life.
+        // If you do, put three +1/+1 counters on Ob Nixilis, the Fallen.
+        addCard(Zone.BATTLEFIELD, playerB, "Ob Nixilis, the Fallen");
+        addCard(Zone.HAND, playerB, "Mountain");
+
+        // Deathtouch, lifelink
+        // When Wurmcoil Engine dies, create a 3/3 colorless Wurm artifact creature token with deathtouch and a 3/3 colorless Wurm artifact creature token with lifelink.
+        addCard(Zone.BATTLEFIELD, playerA, "Wurmcoil Engine");
+        // If a creature you control would deal damage to a creature or player, it deals double that damage to that creature or player instead.
+        addCard(Zone.BATTLEFIELD, playerA, "Gratuitous Violence");
+
+        playLand(2, PhaseStep.PRECOMBAT_MAIN, playerB, "Mountain");
+        setChoice(playerB, "Yes");
+        addTarget(playerB, playerA);
+
+        attack(2, playerB, "Ob Nixilis, the Fallen");
+        block(2, playerA, "Wurmcoil Engine", "Ob Nixilis, the Fallen");
+
+        setStopAt(2, PhaseStep.POSTCOMBAT_MAIN);
+        execute();
+
+        assertGraveyardCount(playerB, "Ob Nixilis, the Fallen", 1);
+
+        assertGraveyardCount(playerA, "Wurmcoil Engine", 1);
+        assertPermanentCount(playerA, "Wurm", 2);
+
+        assertLife(playerB, 20);
+        assertLife(playerA, 29); // -2 from Ob Nixilis + 12 from double damage with lifelink from Wurmcoil Engine
+
+    }
+
+    @Test
+    public void testDamageToPlayer() {
+        // Deathtouch, lifelink
+        // When Wurmcoil Engine dies, create a 3/3 colorless Wurm artifact creature token with deathtouch and a 3/3 colorless Wurm artifact creature token with lifelink.
+        addCard(Zone.BATTLEFIELD, playerA, "Wurmcoil Engine");
+        // If a creature you control would deal damage to a creature or player, it deals double that damage to that creature or player instead.
+        addCard(Zone.BATTLEFIELD, playerA, "Gratuitous Violence");
+
+        attack(1, playerA, "Wurmcoil Engine");
+
+        setStopAt(1, PhaseStep.POSTCOMBAT_MAIN);
+        execute();
+
+        assertPermanentCount(playerA, "Wurmcoil Engine", 1);
+
+        assertLife(playerB, 8);
+        assertLife(playerA, 32);
+
+    }
+}

Mage/src/main/java/mage/game/permanent/PermanentImpl.java

@@ -28,7 +28,6 @@
 package mage.game.permanent;
 
 import java.util.*;
-
 import mage.MageObject;
 import mage.MageObjectReference;
 import mage.ObjectColor;
@@ -751,7 +750,7 @@ public abstract class PermanentImpl extends CardImpl implements Permanent {
                 if (source != null && sourceAbilities != null) {
                     if (sourceAbilities.containsKey(LifelinkAbility.getInstance().getId())) {
                         Player player = game.getPlayer(sourceControllerId);
-                        player.gainLife(damageAmount, game);
+                        player.gainLife(damageDone, game);
                     }
                     if (sourceAbilities.containsKey(DeathtouchAbility.getInstance().getId())) {
                         deathtouched = true;