- FIXME: There is a strange bug with ETB replacement effects not being recreated under certain specific circumstances, for example, when an exiled-face-down card is returned to hand via AF ChangeZone: e.g. The Rack obtained via Necropotence does not work because its ETB effect ends up somehow being not set up correctly.

- For now, introduced a local change specific to Necropotence, but I think this is indicative of a bigger issue in the underlying code. If anyone knows why this is happening and where this is best fixed, please assist.

forge-game/src/main/java/forge/game/ability/effects/ChangeZoneEffect.java

@@ -613,8 +613,16 @@ public class ChangeZoneEffect extends SpellAbilityEffect {
                     hostCard.addImprintedCard(movedCard);
                 }
             }
+
+            // Without this, for example, The Rack returned from exile to hand via Necropotence has
+            // its ETB replacement effect missing and does not work.
+            // TODO: Why does this happen? How generic should this "ETB keyword reset" be and where is it best done?
+            if (sa.hasParam("ResetETBKeywords")) {
+                CardFactoryUtil.setupEtbKeywords(movedCard);
+            }
         }
 
+
         if (!triggerList.isEmpty()) {
             final HashMap<String, Object> runParams = new HashMap<String, Object>();
             runParams.put("Cards", triggerList);

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

@@ -2449,7 +2449,7 @@ public class CardFactoryUtil {
      * TODO: Write javadoc for this method.
      * @param card
      */
-    private static void setupEtbKeywords(final Card card) {
+    public static void setupEtbKeywords(final Card card) {
         for (String kw : card.getKeywords()) {
 
             if (kw.startsWith("ETBReplacement")) {