[MIC] Implemented Visions of Glory

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

@@ -543,7 +543,7 @@ public interface Ability extends Controllable, Serializable {
 
     void adjustTargets(Game game);
 
-    void setCostAdjuster(CostAdjuster costAdjuster);
+    Ability setCostAdjuster(CostAdjuster costAdjuster);
 
     CostAdjuster getCostAdjuster();
 

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

@@ -1323,8 +1323,9 @@ public abstract class AbilityImpl implements Ability {
      * @param costAdjuster
      */
     @Override
-    public void setCostAdjuster(CostAdjuster costAdjuster) {
+    public AbilityImpl setCostAdjuster(CostAdjuster costAdjuster) {
         this.costAdjuster = costAdjuster;
+        return this;
     }
 
     @Override

Mage/src/main/java/mage/abilities/costs/costadjusters/CommanderManaValueAdjuster.java

@@ -0,0 +1,35 @@
+package mage.abilities.costs.costadjusters;
+
+import mage.MageObject;
+import mage.abilities.Ability;
+import mage.abilities.costs.CostAdjuster;
+import mage.constants.CommanderCardType;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.players.Player;
+import mage.util.CardUtil;
+
+/**
+ * @author TheElk801
+ */
+public enum CommanderManaValueAdjuster implements CostAdjuster {
+    instance;
+
+    @Override
+    public void adjustCosts(Ability ability, Game game) {
+        Player player = game.getPlayer(ability.getControllerId());
+        if (player == null) {
+            return;
+        }
+        int maxValue = game
+                .getCommanderCardsFromAnyZones(
+                        player, CommanderCardType.ANY,
+                        Zone.BATTLEFIELD, Zone.COMMAND
+                )
+                .stream()
+                .mapToInt(MageObject::getManaValue)
+                .max()
+                .orElse(0);
+        CardUtil.reduceCost(ability, maxValue);
+    }
+}

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

@@ -177,8 +177,9 @@ public class FlashbackAbility extends SpellAbility {
      *
      * @param abilityName
      */
-    public void setAbilityName(String abilityName) {
+    public FlashbackAbility setAbilityName(String abilityName) {
         this.abilityName = abilityName;
+        return this;
     }
 
 }

Mage/src/main/java/mage/game/stack/StackAbility.java

@@ -664,8 +664,9 @@ public class StackAbility extends StackObjectImpl implements Ability {
     }
 
     @Override
-    public void setCostAdjuster(CostAdjuster costAdjuster) {
+    public StackAbility setCostAdjuster(CostAdjuster costAdjuster) {
         this.costAdjuster = costAdjuster;
+        return this;
     }
 
     @Override