* Fixed some possible null pointer exceptions.

Mage.Sets/src/mage/cards/i/InvaderParasite.java

@@ -54,15 +54,18 @@ import mage.target.targetpointer.FixedTarget;
 public class InvaderParasite extends CardImpl {
 
     public InvaderParasite(UUID ownerId, CardSetInfo setInfo) {
-        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{3}{R}{R}");
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{R}{R}");
         this.subtype.add("Insect");
 
         this.power = new MageInt(3);
         this.toughness = new MageInt(2);
 
+        // Imprint - When Invader Parasite enters the battlefield, exile target land.
         Ability ability = new EntersBattlefieldTriggeredAbility(new InvaderParasiteImprintEffect(), false);
         ability.addTarget(new TargetLandPermanent());
         this.addAbility(ability);
+
+        // Whenever a land with the same name as the exiled card enters the battlefield under an opponent's control, Invader Parasite deals 2 damage to that player.
         this.addAbility(new InvaderParasiteTriggeredAbility());
     }
 
@@ -77,6 +80,7 @@ public class InvaderParasite extends CardImpl {
 }
 
 class InvaderParasiteImprintEffect extends OneShotEffect {
+
     InvaderParasiteImprintEffect() {
         super(Outcome.Exile);
         staticText = "exile target land";
@@ -104,6 +108,7 @@ class InvaderParasiteImprintEffect extends OneShotEffect {
 }
 
 class InvaderParasiteTriggeredAbility extends TriggeredAbilityImpl {
+
     InvaderParasiteTriggeredAbility() {
         super(Zone.BATTLEFIELD, new DamageTargetEffect(2));
     }
@@ -125,12 +130,12 @@ class InvaderParasiteTriggeredAbility extends TriggeredAbilityImpl {
     @Override
     public boolean checkTrigger(GameEvent event, Game game) {
         if (game.getOpponents(this.controllerId).contains(event.getPlayerId())) {
-            Permanent p = game.getPermanent(event.getTargetId());
+            Permanent targetPermanent = game.getPermanent(event.getTargetId());
             Permanent sourcePermanent = game.getPermanent(getSourceId());
-            if (p != null && sourcePermanent != null) {
+            if (targetPermanent != null && sourcePermanent != null) {
                 if (sourcePermanent.getImprinted().size() > 0) {
                     Card imprintedCard = game.getCard(sourcePermanent.getImprinted().get(0));
-                    if (p.getName().equals(imprintedCard.getName())) {
+                    if (imprintedCard != null && targetPermanent.getName().equals(imprintedCard.getName())) {
                         for (Effect effect : this.getEffects()) {
                             effect.setTargetPointer(new FixedTarget(event.getPlayerId()));
                         }

Mage/src/main/java/mage/abilities/mana/AnyColorLandsProduceManaAbility.java

@@ -29,6 +29,8 @@ package mage.abilities.mana;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import mage.Mana;
 import mage.abilities.Abilities;
 import mage.abilities.Ability;
@@ -161,6 +163,7 @@ class AnyColorLandsProduceManaEffect extends ManaEffect {
     }
 
     private Mana getManaTypes(Game game, Ability source) {
+        Logger.getLogger(this.getClass().getName()).log(Level.WARNING, "needed to identify endless loop causing cards: {0}", source.getSourceObject(game).getName());
         List<Permanent> lands = game.getBattlefield().getActivePermanents(filter, source.getControllerId(), source.getSourceId(), game);
         Mana types = new Mana();
         for (Permanent land : lands) {

Mage/src/main/java/mage/players/PlayerImpl.java

@@ -3293,6 +3293,9 @@ public abstract class PlayerImpl implements Player, Serializable {
 
     @Override
     public boolean moveCardToGraveyardWithInfo(Card card, UUID sourceId, Game game, Zone fromZone) {
+        if (card == null) {
+            return false;
+        }
         boolean result = false;
         //    Zone fromZone = game.getState().getZone(card.getId());
         if (card.moveToZone(Zone.GRAVEYARD, sourceId, game, fromZone != null ? fromZone == Zone.BATTLEFIELD : false)) {
@@ -3317,6 +3320,9 @@ public abstract class PlayerImpl implements Player, Serializable {
 
     @Override
     public boolean moveCardToLibraryWithInfo(Card card, UUID sourceId, Game game, Zone fromZone, boolean toTop, boolean withName) {
+        if (card == null) {
+            return false;
+        }
         boolean result = false;
         if (card.moveToZone(Zone.LIBRARY, sourceId, game, toTop)) {
             if (!game.isSimulation()) {
@@ -3346,6 +3352,9 @@ public abstract class PlayerImpl implements Player, Serializable {
 
     @Override
     public boolean moveCardToExileWithInfo(Card card, UUID exileId, String exileName, UUID sourceId, Game game, Zone fromZone, boolean withName) {
+        if (card == null) {
+            return false;
+        }
         boolean result = false;
         if (card.moveToExile(exileId, exileName, sourceId, game)) {
             if (!game.isSimulation()) {