diff --git a/Mage.Server.Plugins/Mage.Game.TwoPlayerDuel/src/mage/game/TwoPlayerMatch.java b/Mage.Server.Plugins/Mage.Game.TwoPlayerDuel/src/mage/game/TwoPlayerMatch.java
index 56e3535ee3..64100769d1 100644
--- a/Mage.Server.Plugins/Mage.Game.TwoPlayerDuel/src/mage/game/TwoPlayerMatch.java
+++ b/Mage.Server.Plugins/Mage.Game.TwoPlayerDuel/src/mage/game/TwoPlayerMatch.java
@@ -1,4 +1,3 @@
-
 package mage.game;
 
 import mage.game.match.MatchImpl;
@@ -17,7 +16,12 @@ public class TwoPlayerMatch extends MatchImpl {
     @Override
     public void startGame() throws GameException {
         Mulligan mulligan = options.getMulliganType().getMulligan(options.getFreeMulligans());
-        TwoPlayerDuel game = new TwoPlayerDuel(options.getAttackOption(), options.getRange(), mulligan, 20, options.isLimited() || "Limited".equals(options.getDeckType()) ? 40 : 60);
+
+        // workaround to enable limited deck size in limited set as deck type (Yorion, Sky Nomad)
+        // see comments from https://github.com/magefree/mage/commit/4874ad31c199ea573187ea2790268be3a4d4c95a
+        boolean isLimitedDeck = options.isLimited() || "Limited".equals(options.getDeckType());
+
+        TwoPlayerDuel game = new TwoPlayerDuel(options.getAttackOption(), options.getRange(), mulligan, 20, isLimitedDeck ? 40 : 60);
         // Sets a start message about the match score
         game.setStartMessage(this.createGameStartMessage());
         initGame(game);
diff --git a/Mage/src/main/java/mage/MageObject.java b/Mage/src/main/java/mage/MageObject.java
index ea3c24dbfa..49a8827b0b 100644
--- a/Mage/src/main/java/mage/MageObject.java
+++ b/Mage/src/main/java/mage/MageObject.java
@@ -106,6 +106,21 @@ public interface MageObject extends MageItem, Serializable {
 
     void setStartingLoyalty(int startingLoyalty);
 
+    /**
+     * Dynamic cost modification for card (process only OWN abilities).
+     * <p>
+     * Usage example: if it need stack related info (like real targets) then must check two
+     * states (game.inCheckPlayableState):
+     * <p>
+     * 1. In playable state it must check all possible use cases (e.g. allow to
+     * reduce on any available target and modes)
+     * <p>
+     * 2. In real cast state it must check current use case (e.g. real selected
+     * targets and modes)
+     *
+     * @param ability
+     * @param game
+     */
     void adjustCosts(Ability ability, Game game);
 
     void adjustTargets(Ability ability, Game game);
diff --git a/Mage/src/main/java/mage/cards/ModalDoubleFacesCardHalfImpl.java b/Mage/src/main/java/mage/cards/ModalDoubleFacesCardHalfImpl.java
index 228ffe1b4f..ce24d5e81e 100644
--- a/Mage/src/main/java/mage/cards/ModalDoubleFacesCardHalfImpl.java
+++ b/Mage/src/main/java/mage/cards/ModalDoubleFacesCardHalfImpl.java
@@ -101,6 +101,7 @@ public class ModalDoubleFacesCardHalfImpl extends CardImpl implements ModalDoubl
         this.setPT(new MageInt(power), new MageInt(toughness));
     }
 
+    @Override
     public void setPT(MageInt power, MageInt toughness) {
         this.power = power;
         this.toughness = toughness;