diff --git a/Mage.Sets/src/mage/sets/onslaught/HarshMercy.java b/Mage.Sets/src/mage/sets/onslaught/HarshMercy.java
new file mode 100644
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+++ b/Mage.Sets/src/mage/sets/onslaught/HarshMercy.java
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+/*
+ *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without modification, are
+ *  permitted provided that the following conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *     2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are those of the
+ *  authors and should not be interpreted as representing official policies, either expressed
+ *  or implied, of BetaSteward_at_googlemail.com.
+ */
+package mage.sets.onslaught;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+import mage.MageObject;
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.DestroyAllEffect;
+import mage.cards.CardImpl;
+import mage.cards.repository.CardRepository;
+import mage.choices.Choice;
+import mage.choices.ChoiceImpl;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.Rarity;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.filter.predicate.Predicates;
+import mage.filter.predicate.mageobject.SubtypePredicate;
+import mage.game.Game;
+import mage.players.Player;
+
+/**
+ *
+ * @author pcasaretto
+ */
+public class HarshMercy extends CardImpl {
+
+    public HarshMercy(UUID ownerId) {
+        super(ownerId, 39, "Harsh Mercy", Rarity.RARE, new CardType[]{CardType.SORCERY}, "{2}{W}");
+        this.expansionSetCode = "ONS";
+
+        // Each player chooses a creature type. Destroy all creatures that aren't of a type chosen this way. They can't be regenerated.
+        this.getSpellAbility().addEffect(new HarshMercyEffect());
+    }
+
+    public HarshMercy(final HarshMercy card) {
+        super(card);
+    }
+
+    @Override
+    public HarshMercy copy() {
+        return new HarshMercy(this);
+    }
+}
+
+class HarshMercyEffect extends OneShotEffect {
+
+    public HarshMercyEffect() {
+        super(Outcome.DestroyPermanent);
+        this.staticText = "Each player chooses a creature type. Destroy all creatures that aren't of a type chosen this way. They can't be regenerated.";
+    }
+
+    public HarshMercyEffect(final HarshMercyEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public HarshMercyEffect copy() {
+        return new HarshMercyEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        MageObject sourceObject = game.getObject(source.getSourceId());
+        if (controller != null && sourceObject != null) {
+            Set<String> chosenTypes = new HashSet<>();
+            for (UUID playerId : game.getState().getPlayersInRange(controller.getId(), game) ) {
+                Player player = game.getPlayer(playerId);
+                Choice typeChoice = new ChoiceImpl(true);
+                typeChoice.setMessage("Choose a creature type");
+                typeChoice.setChoices(CardRepository.instance.getCreatureTypes());
+                while (!player.choose(Outcome.DestroyPermanent, typeChoice, game)) {
+                    if (!player.canRespond()) {
+                        continue;
+                    }
+                }
+                String chosenType = typeChoice.getChoice();
+                if (chosenType != null) {
+                    game.informPlayers(sourceObject.getIdName() + ": " + player.getLogName() + " has chosen " + chosenType);
+                    chosenTypes.add(chosenType);
+                }
+            }
+
+            FilterPermanent filter = new FilterCreaturePermanent("creatures");
+            for (String type : chosenTypes) {
+                filter.add(Predicates.not(new SubtypePredicate(type)));
+            }
+                       
+
+            return (new DestroyAllEffect(filter, true)).apply(game, source);
+        }
+        return false;
+    }
+
+}