From d393ac9c60e063763d26bb3c867033895378a082 Mon Sep 17 00:00:00 2001
From: Oleg Agafonov <jaydi85@gmail.com>
Date: Fri, 31 Mar 2023 23:38:09 +0400
Subject: [PATCH] Fixed NPE in some cards with exile zone (example: Draugr
 Necromancer)

---
 .../src/mage/cards/a/AutomatedArtificer.java    |  4 +++-
 .../src/mage/cards/d/DraugrNecromancer.java     |  2 +-
 .../emblems/TibaltCosmicImpostorEmblem.java     | 17 +++++++----------
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/Mage.Sets/src/mage/cards/a/AutomatedArtificer.java b/Mage.Sets/src/mage/cards/a/AutomatedArtificer.java
index e39f0d2b9c..1b6f49f102 100644
--- a/Mage.Sets/src/mage/cards/a/AutomatedArtificer.java
+++ b/Mage.Sets/src/mage/cards/a/AutomatedArtificer.java
@@ -10,6 +10,7 @@ import mage.abilities.costs.common.TapSourceCost;
 import mage.abilities.mana.ConditionalColorlessManaAbility;
 import mage.abilities.mana.builder.ConditionalManaBuilder;
 import mage.abilities.mana.conditional.ManaCondition;
+import mage.cards.Card;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
 import mage.constants.CardType;
@@ -87,7 +88,8 @@ class AutomatedArtificerManaCondition extends ManaCondition {
                     return false;
                 }
                 if (object instanceof Commander) {
-                    return ((Commander) object).getSourceObject().isArtifact(game);
+                    Card card = ((Commander) object).getSourceObject();
+                    return card != null && card.isArtifact(game);
                 }
                 return object.isArtifact(game);
         }
diff --git a/Mage.Sets/src/mage/cards/d/DraugrNecromancer.java b/Mage.Sets/src/mage/cards/d/DraugrNecromancer.java
index 259f04e49c..8ca2fce148 100644
--- a/Mage.Sets/src/mage/cards/d/DraugrNecromancer.java
+++ b/Mage.Sets/src/mage/cards/d/DraugrNecromancer.java
@@ -193,7 +193,7 @@ class DraugrNecromancerSpendAnyManaEffect extends AsThoughEffectImpl implements
 
     @Override
     public ManaType getAsThoughManaType(ManaType manaType, ManaPoolItem mana, UUID affectedControllerId, Ability source, Game game) {
-        if (mana.getSourceObject().isSnow()) {
+        if (mana.getSourceObject() != null && mana.getSourceObject().isSnow()) {
             return mana.getFirstAvailable();
         }
         return null;
diff --git a/Mage/src/main/java/mage/game/command/emblems/TibaltCosmicImpostorEmblem.java b/Mage/src/main/java/mage/game/command/emblems/TibaltCosmicImpostorEmblem.java
index 98d2c177ae..e9baa8f92b 100644
--- a/Mage/src/main/java/mage/game/command/emblems/TibaltCosmicImpostorEmblem.java
+++ b/Mage/src/main/java/mage/game/command/emblems/TibaltCosmicImpostorEmblem.java
@@ -57,23 +57,20 @@ class TibaltCosmicImpostorPlayFromExileEffect extends AsThoughEffectImpl {
             return false;
         }
         // the exile zone of the Tibalt, Cosmic Impostor that spawned the emblem only
-        UUID exileId = CardUtil.getExileZoneId(tibaltEmblem.getSourceObject().getId().toString(), game);
-        if (exileId == null) {
-            return false;
-        }
-        ExileZone exile = game.getState().getExile().getExileZone(exileId);
-        if (exile == null) {
-            return false;
-        }
-        if (exile.isEmpty()) {
+        UUID sourceId = tibaltEmblem.getSourceId();
+        UUID exileId = CardUtil.getExileZoneId(sourceId != null ? sourceId.toString() : source.getSourceId().toString(), game);
+        ExileZone exileZone = game.getState().getExile().getExileZone(exileId);
+        if (exileZone == null || exileZone.isEmpty()) {
             return false;
         }
+
         Card cardInExile = game.getCard(objectId);
         if (cardInExile == null) {
             return false;
         }
+
         UUID mainCardId = cardInExile.getMainCard().getId();
-        if (exile.contains(mainCardId)
+        if (exileZone.contains(mainCardId)
                 && affectedControllerId.equals(source.getControllerId())
                 && game.getState().getZone(mainCardId).equals(Zone.EXILED)) {
             CardUtil.makeCardPlayable(game, source, cardInExile, Duration.Custom, true);