- Fixed a miscalculation and related NPE when trying to predict the bonus from Arahbo, Roar of the World.

- Some extra NPE prevention measures in related trigger processing code.

forge-game/src/main/java/forge/game/card/Card.java

@@ -824,6 +824,9 @@ public class Card extends GameEntity implements Comparable<Card> {
         if (!currentState.getTriggers().isEmpty()) {
             for (final Trigger t : currentState.getTriggers()) {
                 final SpellAbility sa = t.getTriggeredSA();
+                if (sa == null) {
+                    continue;
+                }
                 triggered = sa.hasTriggeringObject(typeIn) ? sa.getTriggeringObject(typeIn) : null;
                 if (triggered != null) {
                     break;

forge-game/src/main/java/forge/game/card/CardFactoryUtil.java

@@ -656,7 +656,7 @@ public class CardFactoryUtil {
      * @return a int.
      */
     public static int xCount(final Card c, final String expression) {
-        if (StringUtils.isBlank(expression)) {
+        if (StringUtils.isBlank(expression) || c == null) {
             return 0;
         }
         if (StringUtils.isNumeric(expression)) {