- Add Deck copy constructor

- Throw exception when deserialising non-existing PaperCard

forge-core/src/main/java/forge/deck/Deck.java

@@ -62,6 +62,19 @@ public class Deck extends DeckBase implements Iterable<Entry<DeckSection, CardPo
         getOrCreate(DeckSection.Main);
     }
 
+    /**
+     * Copy constructor.
+     * 
+     * @param other
+     *            the {@link Deck} to copy.
+     */
+    public Deck(final Deck other) {
+        super(other.getName());
+        setComment(other.getComment());
+        parts.putAll(other.parts);
+        tags.addAll(other.getTags());
+    }
+
     @Override
     public String getItemType() {
         return "Deck";

forge-core/src/main/java/forge/item/PaperCard.java

@@ -211,6 +211,9 @@ public final class PaperCard implements Comparable<IPaperCard>, InventoryItemFro
         ois.defaultReadObject();
 
         final IPaperCard pc = StaticData.instance().getCommonCards().getCard(name, edition, artIndex);
+        if (pc == null) {
+            throw new IOException(String.format("Card %s not found", name));
+        }
         this.rules = pc.getRules();
         this.rarity = pc.getRarity();
     }