diff --git a/Mage.Sets/src/mage/cards/m/MobilizedDistrict.java b/Mage.Sets/src/mage/cards/m/MobilizedDistrict.java
new file mode 100644
index 00000000000..99bf49a7eea
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/m/MobilizedDistrict.java
@@ -0,0 +1,125 @@
+package mage.cards.m;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.dynamicvalue.common.PermanentsOnBattlefieldCount;
+import mage.abilities.effects.common.continuous.BecomesCreatureSourceEffect;
+import mage.abilities.effects.common.cost.CostModificationEffectImpl;
+import mage.abilities.hint.ValueHint;
+import mage.abilities.keyword.VigilanceAbility;
+import mage.abilities.mana.ColorlessManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterCreatureOrPlaneswalkerPermanent;
+import mage.filter.predicate.mageobject.SupertypePredicate;
+import mage.filter.predicate.permanent.ControllerPredicate;
+import mage.game.Game;
+import mage.game.permanent.token.TokenImpl;
+import mage.players.Player;
+import mage.util.CardUtil;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class MobilizedDistrict extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterCreatureOrPlaneswalkerPermanent();
+
+    static {
+        filter.add(new SupertypePredicate(SuperType.LEGENDARY));
+        filter.add(new ControllerPredicate(TargetController.YOU));
+    }
+
+    static final DynamicValue cardsCount = new PermanentsOnBattlefieldCount(filter);
+
+    public MobilizedDistrict(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.LAND}, "");
+
+        // {T}: Add {C}.
+        this.addAbility(new ColorlessManaAbility());
+
+        // {4}: Mobilized District becomes a 3/3 Citizen creature with vigilance until end of turn. It's still a land. This ability costs {1} less to activate for each legendary creature and planeswalker you control.
+        // TODO: Make ability properly copiable
+        Ability ability = new SimpleActivatedAbility(new BecomesCreatureSourceEffect(
+                new MobilizedDistrictToken(), "land", Duration.EndOfTurn
+        ).setText("{this} becomes a 3/3 Citizen creature with vigilance until end of turn. " +
+                "It's still a land. This ability costs {1} less to activate " +
+                "for each legendary creature and planeswalker you control."
+        ), new GenericManaCost(4));
+        this.addAbility(new SimpleStaticAbility(
+                Zone.ALL, new MobilizedDistrictCostIncreasingEffect(ability.getOriginalId())
+        ).addHint(new ValueHint("legendary creatures and planeswalkers you control", cardsCount)));
+    }
+
+    private MobilizedDistrict(final MobilizedDistrict card) {
+        super(card);
+    }
+
+    @Override
+    public MobilizedDistrict copy() {
+        return new MobilizedDistrict(this);
+    }
+}
+
+class MobilizedDistrictToken extends TokenImpl {
+
+    MobilizedDistrictToken() {
+        super("", "3/3 Citizen creature with vigilance");
+        cardType.add(CardType.CREATURE);
+        subtype.add(SubType.CITIZEN);
+        power = new MageInt(3);
+        toughness = new MageInt(3);
+        addAbility(VigilanceAbility.getInstance());
+    }
+
+    private MobilizedDistrictToken(final MobilizedDistrictToken token) {
+        super(token);
+    }
+
+    public MobilizedDistrictToken copy() {
+        return new MobilizedDistrictToken(this);
+    }
+}
+
+class MobilizedDistrictCostIncreasingEffect extends CostModificationEffectImpl {
+
+    private final UUID originalId;
+
+    MobilizedDistrictCostIncreasingEffect(UUID originalId) {
+        super(Duration.EndOfGame, Outcome.Benefit, CostModificationType.REDUCE_COST);
+        this.originalId = originalId;
+    }
+
+    private MobilizedDistrictCostIncreasingEffect(final MobilizedDistrictCostIncreasingEffect effect) {
+        super(effect);
+        this.originalId = effect.originalId;
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source, Ability abilityToModify) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller != null) {
+            int count = MobilizedDistrict.cardsCount.calculate(game, source, this);
+            CardUtil.reduceCost(abilityToModify, count);
+        }
+        return true;
+    }
+
+    @Override
+    public boolean applies(Ability abilityToModify, Ability source, Game game) {
+        return abilityToModify.getOriginalId().equals(originalId);
+    }
+
+    @Override
+    public MobilizedDistrictCostIncreasingEffect copy() {
+        return new MobilizedDistrictCostIncreasingEffect(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/cards/p/Pteramander.java b/Mage.Sets/src/mage/cards/p/Pteramander.java
index 6a98bcf1922..2172b5de823 100644
--- a/Mage.Sets/src/mage/cards/p/Pteramander.java
+++ b/Mage.Sets/src/mage/cards/p/Pteramander.java
@@ -44,7 +44,7 @@ public final class Pteramander extends CardImpl {
         Ability ability = new SimpleActivatedAbility(new AdaptEffect(4).setText("Adapt 4. This ability costs {1} less to activate for each instant and sorcery card in your graveyard."), new ManaCostsImpl("{7}{U}"));
         this.addAbility(ability);
         this.addAbility(new SimpleStaticAbility(Zone.ALL, new PteramanderCostIncreasingEffect(ability.getOriginalId()))
-                .addHint(new ValueHint("Instant and sorcery card in your graveyard", cardsCount)));
+                .addHint(new ValueHint("Instant and sorcery cards in your graveyard", cardsCount)));
     }
 
     private Pteramander(final Pteramander card) {
diff --git a/Mage.Sets/src/mage/sets/WarOfTheSpark.java b/Mage.Sets/src/mage/sets/WarOfTheSpark.java
index 78bf217225c..aabda5e1848 100644
--- a/Mage.Sets/src/mage/sets/WarOfTheSpark.java
+++ b/Mage.Sets/src/mage/sets/WarOfTheSpark.java
@@ -142,6 +142,7 @@ public final class WarOfTheSpark extends ExpansionSet {
         cards.add(new SetCardInfo("Mayhem Devil", 204, Rarity.UNCOMMON, mage.cards.m.MayhemDevil.class));
         cards.add(new SetCardInfo("Merfolk Skydiver", 205, Rarity.UNCOMMON, mage.cards.m.MerfolkSkydiver.class));
         cards.add(new SetCardInfo("Mizzium Tank", 138, Rarity.RARE, mage.cards.m.MizziumTank.class));
+        cards.add(new SetCardInfo("Mobilized District", 249, Rarity.RARE, mage.cards.m.MobilizedDistrict.class));
         cards.add(new SetCardInfo("Mountain", 259, Rarity.LAND, mage.cards.basiclands.Mountain.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Mountain", 260, Rarity.LAND, mage.cards.basiclands.Mountain.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Mountain", 261, Rarity.LAND, mage.cards.basiclands.Mountain.class, NON_FULL_USE_VARIOUS));