Update getDefinedCards for how it get Valid* cards so the syntax is consistent with other Valid script. Also remove the hacky way to set Effect as mutable for Raging River and Plague of Vermin

forge-core/src/main/java/forge/card/CardType.java

@@ -58,7 +58,6 @@ public final class CardType implements Comparable<CardType>, CardTypeView {
         Conspiracy(false, "conspiracies"),
         Creature(true, "creatures"),
         Dungeon(false, "dungeons"),
-        Emblem(false, "emblems"),
         Enchantment(true, "enchantments"),
         Instant(false, "instants"),
         Land(true, "lands"),
@@ -437,11 +436,6 @@ public final class CardType implements Comparable<CardType>, CardTypeView {
         return coreTypes.contains(CoreType.Phenomenon);
     }
 
-    @Override
-    public boolean isEmblem() {
-        return coreTypes.contains(CoreType.Emblem);
-    }
-
     @Override
     public boolean isTribal() {
         return coreTypes.contains(CoreType.Tribal);
@@ -547,7 +541,7 @@ public final class CardType implements Comparable<CardType>, CardTypeView {
         if (!isInstant() && !isSorcery()) {
             Iterables.removeIf(subtypes, Predicates.IS_SPELL_TYPE);
         }
-        if (!isPlaneswalker() && !isEmblem()) {
+        if (!isPlaneswalker()) {
             Iterables.removeIf(subtypes, Predicates.IS_WALKER_TYPE);
         }
     }

forge-core/src/main/java/forge/card/CardTypeView.java

@@ -42,7 +42,6 @@ public interface CardTypeView extends Iterable<String>, Serializable {
     boolean isBasicLand();
     boolean isPlane();
     boolean isPhenomenon();
-    boolean isEmblem();
     boolean isTribal();
     boolean isDungeon();
     CardTypeView getTypeWithChanges(Iterable<CardChangedType> changedCardTypes);