diff --git a/Mage.Sets/src/mage/sets/legions/MistformSliver.java b/Mage.Sets/src/mage/sets/legions/MistformSliver.java
new file mode 100644
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+++ b/Mage.Sets/src/mage/sets/legions/MistformSliver.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.legions;
+
+import java.util.UUID;
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.continious.GainAbilityAllEffect;
+import mage.cards.CardImpl;
+import mage.cards.repository.CardRepository;
+import mage.choices.Choice;
+import mage.choices.ChoiceImpl;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.constants.Rarity;
+import mage.constants.Zone;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+
+/**
+ *
+ * @author cbt33, Plopman (Engineered Plague)
+ */
+public class MistformSliver extends CardImpl<MistformSliver> {
+
+    public MistformSliver(UUID ownerId) {
+        super(ownerId, 46, "Mistform Sliver", Rarity.COMMON, new CardType[]{CardType.CREATURE}, "{1}{U}");
+        this.expansionSetCode = "LGN";
+        this.subtype.add("Illusion");
+        this.subtype.add("Sliver");
+
+        this.color.setBlue(true);
+        this.power = new MageInt(1);
+        this.toughness = new MageInt(1);
+
+        // All Slivers have "{1}: This permanent becomes the creature type of your choice in addition to its other types until end of turn."
+        Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new MistformSliverEffect(), new ManaCostsImpl("{1}"));
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new GainAbilityAllEffect(ability, Duration.WhileOnBattlefield, new FilterCreaturePermanent("Sliver", "Sliver creatures"))));
+    }
+
+    public MistformSliver(final MistformSliver card) {
+        super(card);
+    }
+
+    @Override
+    public MistformSliver copy() {
+        return new MistformSliver(this);
+    }
+}
+
+ class MistformSliverEffect extends OneShotEffect<MistformSliverEffect> {
+
+        public MistformSliverEffect() {
+            super(Outcome.Benefit);
+            staticText = "This permanent becomes the creature type of your choice in addition to its other types until end of turn";
+        }
+
+        public MistformSliverEffect(final MistformSliverEffect effect) {
+            super(effect);
+        }
+
+        @Override
+        public boolean apply(Game game, Ability source) {
+            Player player = game.getPlayer(source.getControllerId());
+            Permanent permanent = game.getPermanent(source.getSourceId());
+            if (player != null && permanent != null) {
+                Choice typeChoice = new ChoiceImpl(true);
+                typeChoice.setMessage("Choose creature type");
+                typeChoice.setChoices(CardRepository.instance.getCreatureTypes());
+                while (!player.choose(Outcome.Detriment, typeChoice, game) && player.isInGame()) {
+                    game.debugMessage("player canceled choosing type. retrying.");
+                }
+                game.informPlayers(permanent.getName() + ": " + player.getName() + " has chosen " + typeChoice.getChoice());
+                game.getState().setValue(permanent.getId() + "_type", typeChoice.getChoice().toString());
+                permanent.addInfo("chosen type", "<i>Chosen type: " + typeChoice.getChoice() + "</i>");
+                permanent.getSubtype().add(typeChoice.getChoice());
+            }
+            return false;
+        }
+
+        @Override
+        public MistformSliverEffect copy() {
+            return new MistformSliverEffect(this);
+        }
+
+    }