* Added logic to check if a card had a triggered ability in the graveyard if it was moved from graveyard to a hidden zone. Because if not, the ability does not trigger.

Mage.Tests/src/test/java/org/mage/test/cards/continuous/LoosingAbilitiesTest.java

@@ -86,4 +86,79 @@ public class LoosingAbilitiesTest extends CardTestPlayerBase {
 
         assertPermanentCount(playerB, "Gravecrawler", 1);
     }
+
+    /**
+     * Yixlid Jailer works incorrectly with reanimation spelss - I cast Unearth
+     * targeting Seasoned Pyromancer with a Yixlid Jailer in play, but didnt get
+     * the Pyromancer's ETB trigger. This is a bug as Jailer only affaects cards
+     * when they are on the battle field
+     */
+    @Test
+    public void testYixlidJailerAndETBEffects() {
+        // Cards in graveyards lose all abilities.
+        addCard(Zone.HAND, playerA, "Yixlid Jailer"); // Creature 2/1 - {1}{B}
+        addCard(Zone.BATTLEFIELD, playerA, "Swamp", 2);
+
+        // When Seasoned Pyromancer enters the battlefield, discard two cards, then draw two cards. For each nonland card discarded this way, create a 1/1 red Elemental creature token.
+        // {3}{R}{R}, Exile Seasoned Pyromancer from your graveyard: Create two 1/1 red Elemental creature tokens.
+        addCard(Zone.GRAVEYARD, playerB, "Seasoned Pyromancer");
+        addCard(Zone.HAND, playerB, "Lightning Bolt", 2);
+        // Return target creature card with converted mana cost 3 or less from your graveyard to the battlefield.
+        // Cycling {2}
+        addCard(Zone.HAND, playerB, "Unearth", 1); // Sorcery {B}
+        addCard(Zone.BATTLEFIELD, playerB, "Swamp", 1);
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Yixlid Jailer");
+
+        castSpell(2, PhaseStep.PRECOMBAT_MAIN, playerB, "Unearth");
+        setChoice(playerB, "Lightning Bolt^Lightning Bolt");
+
+        setStopAt(2, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Yixlid Jailer", 1);
+
+        assertPermanentCount(playerB, "Seasoned Pyromancer", 1);
+
+        assertGraveyardCount(playerB, "Unearth", 1);
+        assertGraveyardCount(playerB, "Lightning Bolt", 2);
+
+    }
+
+    /**
+     * If an ability triggers when the object that has it is put into a hidden
+     * zone from a graveyard, that ability triggers from the graveyard, (such as
+     * Golgari Brownscale), Yixlid Jailer will prevent that ability from
+     * triggering. (2007-05-01)
+     */
+    @Test
+    public void testYixlidJailerAndPutIntoHandEffect() {
+        // Cards in graveyards lose all abilities.
+        addCard(Zone.HAND, playerA, "Yixlid Jailer"); // Creature 2/1 - {1}{B}
+        addCard(Zone.BATTLEFIELD, playerA, "Swamp", 2);
+
+        // When Golgari Brownscale is put into your hand from your graveyard, you gain 2 life.
+        // Dredge 2 (If you would draw a card, instead you may put exactly X cards from the top of
+        //   your library into your graveyard. If you do, return this card from your
+        //   graveyard to your hand. Otherwise, draw a card. )
+        addCard(Zone.GRAVEYARD, playerB, "Golgari Brownscale", 1); // Sorcery {B}
+        // Return target creature card from your graveyard to your hand. If it’s a Zombie card, draw a card.
+        addCard(Zone.HAND, playerB, "Cemetery Recruitment", 1); // Sorcery {1}{B}
+        addCard(Zone.BATTLEFIELD, playerB, "Swamp", 2);
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Yixlid Jailer");
+
+        castSpell(2, PhaseStep.PRECOMBAT_MAIN, playerB, "Cemetery Recruitment");
+
+        setStopAt(2, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Yixlid Jailer", 1);
+        assertHandCount(playerB, "Golgari Brownscale", 1);
+        assertGraveyardCount(playerB, "Cemetery Recruitment", 1);
+
+        assertLife(playerB, 20);  // The trigger of Golgari Brownscale does not work because of Yixlid Jailer
+
+    }
+
 }

Mage/src/main/java/mage/abilities/TriggeredAbilityImpl.java

@@ -1,5 +1,7 @@
 package mage.abilities;
 
+import java.util.Locale;
+import java.util.UUID;
 import mage.MageObject;
 import mage.abilities.effects.Effect;
 import mage.constants.AbilityType;
@@ -10,9 +12,7 @@ import mage.game.events.GameEvent;
 import mage.game.events.GameEvent.EventType;
 import mage.game.events.ZoneChangeEvent;
 import mage.players.Player;
-
+import mage.util.CardUtil;
-import java.util.Locale;
-import java.util.UUID;
 
 /**
  * @author BetaSteward_at_googlemail.com
@@ -158,6 +158,17 @@ public abstract class TriggeredAbilityImpl extends AbilityImpl implements Trigge
         if (event != null && event.getTargetId() != null && event.getTargetId().equals(getSourceId())) {
             switch (event.getType()) {
                 case ZONE_CHANGE:
+                    ZoneChangeEvent zce = (ZoneChangeEvent) event;
+                    if (event.getTargetId().equals(getSourceId()) && !zce.getToZone().isPublicZone()) {
+                        // If an ability triggers when the object that has it is put into a hidden zone from a graveyard,
+                        // that ability triggers from the graveyard, (such as Golgari Brownscale),
+                        // Yixlid Jailer will prevent that ability from triggering.
+                        if (zce.getFromZone().match(Zone.GRAVEYARD)) {
+                            if (!CardUtil.cardHadAbility(this, game.getLastKnownInformationCard(getSourceId(), zce.getFromZone()), getSourceId(), game)) {
+                                return false;
+                            }
+                        }
+                    }
                 case DESTROYED_PERMANENT:
                     if (isLeavesTheBattlefieldTrigger()) {
                         if (event.getType() == EventType.DESTROYED_PERMANENT) {

Mage/src/main/java/mage/abilities/common/ZoneChangeTriggeredAbility.java

@@ -1,4 +1,3 @@
-
 package mage.abilities.common;
 
 import mage.abilities.TriggeredAbilityImpl;

Mage/src/main/java/mage/abilities/keyword/DredgeAbility.java

@@ -44,7 +44,9 @@ class DredgeEffect extends ReplacementEffectImpl {
     public DredgeEffect(int value) {
         super(Duration.WhileInGraveyard, Outcome.AIDontUseIt);
         this.amount = value;
-        this.staticText = new StringBuilder("Dredge ").append(Integer.toString(value)).append(" <i>(If you would draw a card, instead you may put exactly ").append(value).append(" card(s) from the top of your library into your graveyard. If you do, return this card from your graveyard to your hand. Otherwise, draw a card.)</i>").toString();
+        this.staticText = ("Dredge ") + Integer.toString(value) + " <i>(If you would draw a card, instead you may put exactly "
+                + value + " card(s) from the top of your library into your graveyard. If you do, return this card from "
+                + "your graveyard to your hand. Otherwise, draw a card.)</i>";
     }
 
     public DredgeEffect(final DredgeEffect effect) {

Mage/src/main/java/mage/game/Game.java

@@ -1,5 +1,8 @@
 package mage.game;
 
+import java.io.Serializable;
+import java.util.*;
+import java.util.stream.Collectors;
 import mage.MageItem;
 import mage.MageObject;
 import mage.abilities.Ability;
@@ -41,10 +44,6 @@ import mage.players.Players;
 import mage.util.MessageToClient;
 import mage.util.functions.ApplyToPermanent;
 
-import java.io.Serializable;
-import java.util.*;
-import java.util.stream.Collectors;
-
 public interface Game extends MageItem, Serializable {
 
     MatchType getGameType();
@@ -208,6 +207,8 @@ public interface Game extends MageItem, Serializable {
 
     MageObject getLastKnownInformation(UUID objectId, Zone zone);
 
+    CardState getLastKnownInformationCard(UUID objectId, Zone zone);
+
     MageObject getLastKnownInformation(UUID objectId, Zone zone, int zoneChangeCounter);
 
     boolean getShortLivingLKI(UUID objectId, Zone zone);
@@ -298,9 +299,9 @@ public interface Game extends MageItem, Serializable {
     /**
      * Creates and fires an damage prevention event
      *
-     * @param damageEvent     damage event that will be replaced (instanceof check
+     * @param damageEvent damage event that will be replaced (instanceof check
-     *                        will be done)
+     * will be done)
-     * @param source          ability that's the source of the prevention effect
+     * @param source ability that's the source of the prevention effect
      * @param game
      * @param amountToPrevent max preventable amount
      * @return true prevention was successfull / false prevention was replaced
@@ -310,12 +311,12 @@ public interface Game extends MageItem, Serializable {
     /**
      * Creates and fires an damage prevention event
      *
-     * @param event            damage event that will be replaced (instanceof check will be
+     * @param event damage event that will be replaced (instanceof check will be
-     *                         done)
+     * done)
-     * @param source           ability that's the source of the prevention effect
+     * @param source ability that's the source of the prevention effect
      * @param game
      * @param preventAllDamage true if there is no limit to the damage that can
-     *                         be prevented
+     * be prevented
      * @return true prevention was successfull / false prevention was replaced
      */
     PreventionEffectData preventDamage(GameEvent event, Ability source, Game game, boolean preventAllDamage);

Mage/src/main/java/mage/game/GameImpl.java

@@ -90,6 +90,7 @@ public abstract class GameImpl implements Game, Serializable {
     protected Map<UUID, MeldCard> meldCards = new HashMap<>(0);
 
     protected Map<Zone, HashMap<UUID, MageObject>> lki = new EnumMap<>(Zone.class);
+    protected Map<Zone, HashMap<UUID, CardState>> lkiCardState = new EnumMap<>(Zone.class);
     protected Map<UUID, Map<Integer, MageObject>> lkiExtended = new HashMap<>();
     // Used to check if an object was moved by the current effect in resolution (so Wrath like effect can be handled correctly)
     protected Map<Zone, Set<UUID>> shortLivingLKI = new EnumMap<>(Zone.class);
@@ -168,6 +169,7 @@ public abstract class GameImpl implements Game, Serializable {
         this.gameOptions = game.gameOptions;
         this.lki.putAll(game.lki);
         this.lkiExtended.putAll(game.lkiExtended);
+        this.lkiCardState.putAll(game.lkiCardState);
         this.shortLivingLKI.putAll(game.shortLivingLKI);
         this.permanentsEntering.putAll(game.permanentsEntering);
 
@@ -2773,6 +2775,20 @@ public abstract class GameImpl implements Game, Serializable {
         return getLastKnownInformation(objectId, zone);
     }
 
+    @Override
+    public CardState getLastKnownInformationCard(UUID objectId, Zone zone) {
+        if (zone == Zone.GRAVEYARD) {
+            Map<UUID, CardState> lkiCardStateMap = lkiCardState.get(zone);
+            if (lkiCardStateMap != null) {
+                CardState cardState = lkiCardStateMap.get(objectId);
+                if (cardState != null) {
+                    return cardState;
+                }
+            }
+        }
+        return null;
+    }
+
     @Override
     public boolean getShortLivingLKI(UUID objectId, Zone zone) {
         Set<UUID> idSet = shortLivingLKI.get(zone);
@@ -2817,16 +2833,28 @@ public abstract class GameImpl implements Game, Serializable {
                     lkiExtended.put(objectId, lkiExtendedMap);
                 }
             }
+        } else if (Zone.GRAVEYARD.equals(zone)) {
+            // Remember card state in this public zone (mainly removed/gained abilities)
+            Map<UUID, CardState> lkiMap = lkiCardState.get(zone);
+            if (lkiMap != null) {
+                lkiMap.put(objectId, getState().getCardState(objectId));
+            } else {
+                HashMap<UUID, CardState> newMap = new HashMap<>();
+                newMap.put(objectId, getState().getCardState(objectId).copy());
+                lkiCardState.put(zone, newMap);
+            }
         }
     }
 
     /**
-     * Reset objects stored for Last Known Information.
+     * Reset objects stored for Last Known Information. (Happens if all effects
+     * are applied und stack is empty)
      */
     @Override
     public void resetLKI() {
         lki.clear();
         lkiExtended.clear();
+        lkiCardState.clear();
         infiniteLoopCounter = 0;
         stackObjectsCheck.clear();
     }

Mage/src/main/java/mage/util/CardUtil.java

@@ -1,5 +1,11 @@
 package mage.util;
 
+import java.io.UnsupportedEncodingException;
+import java.net.URLDecoder;
+import java.net.URLEncoder;
+import java.text.SimpleDateFormat;
+import java.util.Objects;
+import java.util.UUID;
 import mage.MageObject;
 import mage.Mana;
 import mage.abilities.Ability;
@@ -9,18 +15,12 @@ import mage.abilities.costs.mana.*;
 import mage.cards.Card;
 import mage.constants.EmptyNames;
 import mage.filter.Filter;
+import mage.game.CardState;
 import mage.game.Game;
 import mage.game.permanent.Permanent;
 import mage.game.permanent.token.Token;
 import mage.util.functions.CopyTokenFunction;
 
-import java.io.UnsupportedEncodingException;
-import java.net.URLDecoder;
-import java.net.URLEncoder;
-import java.text.SimpleDateFormat;
-import java.util.Objects;
-import java.util.UUID;
-
 /**
  * @author nantuko
  */
@@ -29,10 +29,10 @@ public final class CardUtil {
     private static final String SOURCE_EXILE_ZONE_TEXT = "SourceExileZone";
 
     static final String[] numberStrings = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
-            "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty"};
+        "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty"};
 
     static final String[] ordinalStrings = {"first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eightth", "ninth",
-            "tenth", "eleventh", "twelfth", "thirteenth", "fourteenth", "fifteenth", "sixteenth", "seventeenth", "eighteenth", "nineteenth", "twentieth"};
+        "tenth", "eleventh", "twelfth", "thirteenth", "fourteenth", "fifteenth", "sixteenth", "seventeenth", "eighteenth", "nineteenth", "twentieth"};
 
     public static final SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
 
@@ -147,8 +147,8 @@ public final class CardUtil {
      *
      * @param spellAbility
      * @param manaCostsToReduce costs to reduce
-     * @param convertToGeneric  colored mana does reduce generic mana if no
+     * @param convertToGeneric colored mana does reduce generic mana if no
-     *                          appropriate colored mana is in the costs included
+     * appropriate colored mana is in the costs included
      */
     public static void adjustCost(SpellAbility spellAbility, ManaCosts<ManaCost> manaCostsToReduce, boolean convertToGeneric) {
         ManaCosts<ManaCost> previousCost = spellAbility.getManaCostsToPay();
@@ -333,7 +333,7 @@ public final class CardUtil {
      *
      * @param number number to convert to text
      * @param forOne if the number is 1, this string will be returnedinstead of
-     *               "one".
+     * "one".
      * @return
      */
     public static String numberToText(int number, String forOne) {
@@ -418,7 +418,7 @@ public final class CardUtil {
     /**
      * Creates and saves a (card + zoneChangeCounter) specific exileId.
      *
-     * @param game   the current game
+     * @param game the current game
      * @param source source ability
      * @return the specific UUID
      */
@@ -453,9 +453,9 @@ public final class CardUtil {
      * be specific to a permanent instance. So they won't match, if a permanent
      * was e.g. exiled and came back immediately.
      *
-     * @param text   short value to describe the value
+     * @param text short value to describe the value
      * @param cardId id of the card
-     * @param game   the game
+     * @param game the game
      * @return
      */
     public static String getCardZoneString(String text, UUID cardId, Game game) {
@@ -605,4 +605,29 @@ public final class CardUtil {
             return "";
         }
     }
+
+    /**
+     * Checks if a card had a given ability depending their historic cardState
+     *
+     * @param ability the ability that is checked
+     * @param cardState the historic cardState (from LKI)
+     * @param cardId the id of the card
+     * @param game
+     * @return
+     */
+    public static boolean cardHadAbility(Ability ability, CardState cardState, UUID cardId, Game game) {
+        Card card = game.getCard(cardId);
+        if (card != null) {
+            if (cardState != null) {
+                if (cardState.getAbilities().contains(ability)) { // Check other abilities (possibly given after lost of abilities)
+                    return true;
+                }
+                if (cardState.hasLostAllAbilities()) {
+                    return false; // Not allowed to check abilities of original card
+                }
+            }
+            return card.getAbilities().contains(ability); // check if the original card has the ability
+        }
+        return false;
+    }
 }