diff --git a/Mage.Sets/src/mage/sets/journeyintonyx/MortalObstinacy.java b/Mage.Sets/src/mage/sets/journeyintonyx/MortalObstinacy.java
index 3c9b1c436fe..86b649ef53a 100644
--- a/Mage.Sets/src/mage/sets/journeyintonyx/MortalObstinacy.java
+++ b/Mage.Sets/src/mage/sets/journeyintonyx/MortalObstinacy.java
@@ -31,8 +31,10 @@ import java.util.UUID;
 import mage.abilities.Ability;
 import mage.abilities.TriggeredAbilityImpl;
 import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.common.SacrificeSourceCost;
 import mage.abilities.effects.common.AttachEffect;
 import mage.abilities.effects.common.DestroyTargetEffect;
+import mage.abilities.effects.common.DoIfCostPaid;
 import mage.abilities.effects.common.continious.BoostEnchantedEffect;
 import mage.abilities.keyword.EnchantAbility;
 import mage.cards.CardImpl;
@@ -45,7 +47,6 @@ import mage.game.Game;
 import mage.game.events.DamagedPlayerEvent;
 import mage.game.events.GameEvent;
 import mage.game.permanent.Permanent;
-import mage.players.Player;
 import mage.target.TargetPermanent;
 import mage.target.common.TargetControlledCreaturePermanent;
 import mage.target.common.TargetEnchantmentPermanent;
@@ -90,7 +91,8 @@ public class MortalObstinacy extends CardImpl<MortalObstinacy> {
 class MortalObstinacyAbility extends TriggeredAbilityImpl<MortalObstinacyAbility> {
 
     public MortalObstinacyAbility() {
-        super(Zone.BATTLEFIELD, new DestroyTargetEffect());
+        super(Zone.BATTLEFIELD, new DoIfCostPaid(new DestroyTargetEffect(), new SacrificeSourceCost()));
+        addTarget(new TargetEnchantmentPermanent(true));
     }
 
     public MortalObstinacyAbility(final MortalObstinacyAbility ability) {
@@ -108,18 +110,7 @@ class MortalObstinacyAbility extends TriggeredAbilityImpl<MortalObstinacyAbility
             DamagedPlayerEvent damageEvent = (DamagedPlayerEvent)event;
             Permanent damageMakingCreature = game.getPermanent(event.getSourceId());
             if (damageEvent.isCombatDamage() && damageMakingCreature != null && damageMakingCreature.getAttachments().contains(this.getSourceId())) {
-                Player controller = game.getPlayer(this.getControllerId());
-                Permanent sourceEnchantment = game.getPermanent(this.getSourceId());
-                if (controller != null && sourceEnchantment != null) {
-                    StringBuilder sb = new StringBuilder();
-                    sb.append("Do you wish to sacrifice ").append(sourceEnchantment.getName());
-                    sb.append(" to destroy target enchantment?");
-                    if (controller.chooseUse(Outcome.DestroyPermanent, sb.toString(), game)) {
-                        this.getTargets().clear();
-                        this.addTarget(new TargetEnchantmentPermanent(true));
-                        return true;
-                    }
-                }
+                return true;
             }
         }
         return false;
@@ -127,6 +118,7 @@ class MortalObstinacyAbility extends TriggeredAbilityImpl<MortalObstinacyAbility
 
     @Override
     public String getRule() {
-        return "Whenever enchanted creature deals combat damage to a player, you may sacrifice {this}. If you do, destroy target enchantment.";
+        return new StringBuilder("Whenever enchanted creature deals combat damage to a player, ").append(super.getRule()).toString();
     }
-}
\ No newline at end of file
+}
+
diff --git a/Mage/src/mage/abilities/effects/common/DoIfCostPaid.java b/Mage/src/mage/abilities/effects/common/DoIfCostPaid.java
index cc6348c453d..b6707cfcaf9 100644
--- a/Mage/src/mage/abilities/effects/common/DoIfCostPaid.java
+++ b/Mage/src/mage/abilities/effects/common/DoIfCostPaid.java
@@ -45,7 +45,7 @@ public class DoIfCostPaid extends OneShotEffect<DoIfCostPaid> {
                 message = chooseUseText;
             }
             message = CardUtil.replaceSourceName(message, mageObject.getName());
-            if (player.chooseUse(executingEffect.getOutcome(), message, game)) {
+            if (cost.canPay(source.getSourceId(), player.getId(), game) && player.chooseUse(executingEffect.getOutcome(), message, game)) {
                 cost.clearPaid();
                 if (cost.pay(source, game, source.getSourceId(), source.getControllerId(), false)) {
                     executingEffect.setTargetPointer(this.targetPointer);
diff --git a/readme.md b/readme.md
index cac9791b604..66056deb6e0 100644
--- a/readme.md
+++ b/readme.md
@@ -24,7 +24,7 @@ You will need to have the [Java Runtime Environment](http://java.com/en/) Versio
 
 Here you can find a log of the latest changes: [Release changes] (http://github.com/magefree/mage/wiki/Release-changes)
 
-(looke here for more in detail description what to do: http://www.slightlymagic.net/forum/viewtopic.php?f=70&t=13632)
+(look here for more in detail description what to do: http://www.slightlymagic.net/forum/viewtopic.php?f=70&t=13632)
 
 ## Developer