ManaEffect: fix for adding from cost with generic half

forge-ai/src/main/java/forge/ai/CreatureEvaluator.java

@@ -217,7 +217,7 @@ public class CreatureEvaluator implements Function<Card, Integer> {
             value += addValue(14, "paired");
         }
 
-        if (!c.getEncodedCards().isEmpty()) {
+        if (!c.hasEncodedCard()) {
             value += addValue(24, "encoded");
         }
 

forge-ai/src/main/java/forge/ai/ability/AttachAi.java

@@ -1333,7 +1333,7 @@ public class AttachAi extends SpellAbilityAi {
             CardCollection preferred = CardLists.filter(list, new Predicate<Card>() {
                 @Override
                 public boolean apply(final Card card) {
-                    return card.getAttachedCards().isEmpty();
+                    return !card.hasCardAttachments();
                 }
             });
             return preferred.isEmpty() ? Aggregates.random(list) : Aggregates.random(preferred);