diff --git a/Mage.Sets/src/mage/cards/b/BarracksOfTheThousand.java b/Mage.Sets/src/mage/cards/b/BarracksOfTheThousand.java
new file mode 100644
index 00000000000..5a462272b46
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/b/BarracksOfTheThousand.java
@@ -0,0 +1,56 @@
+package mage.cards.b;
+
+import mage.abilities.common.CastSpellPaidBySourceTriggeredAbility;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.mana.WhiteManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SuperType;
+import mage.filter.FilterSpell;
+import mage.filter.predicate.Predicates;
+import mage.game.permanent.token.GnomeSoldierStarStarToken;
+
+import java.util.UUID;
+
+/**
+ * @author Susucr
+ */
+public final class BarracksOfTheThousand extends CardImpl {
+
+    private static final FilterSpell filter = new FilterSpell("an artifact or creature spell");
+
+    static {
+        filter.add(Predicates.or(
+                CardType.ARTIFACT.getPredicate(),
+                CardType.CREATURE.getPredicate()
+        ));
+    }
+
+    public BarracksOfTheThousand(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT, CardType.LAND}, "");
+
+        this.supertype.add(SuperType.LEGENDARY);
+
+        // (Transforms from Thousand Moons Smithy.)
+        this.nightCard = true;
+
+        // {T}: Add {W}.
+        this.addAbility(new WhiteManaAbility());
+
+        // Whenever you cast an artifact or creature spell using mana produced by Barracks of the Thousand, create a white Gnome Soldier artifact creature token with "This creature's power and toughness are each equal to the number of artifacts and/or creatures you control."
+        this.addAbility(new CastSpellPaidBySourceTriggeredAbility(
+                new CreateTokenEffect(new GnomeSoldierStarStarToken()),
+                filter, false
+        ));
+    }
+
+    private BarracksOfTheThousand(final BarracksOfTheThousand card) {
+        super(card);
+    }
+
+    @Override
+    public BarracksOfTheThousand copy() {
+        return new BarracksOfTheThousand(this);
+    }
+}
\ No newline at end of file
diff --git a/Mage.Sets/src/mage/cards/t/ThousandMoonsSmithy.java b/Mage.Sets/src/mage/cards/t/ThousandMoonsSmithy.java
new file mode 100644
index 00000000000..112ba0a0071
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/t/ThousandMoonsSmithy.java
@@ -0,0 +1,68 @@
+package mage.cards.t;
+
+import mage.abilities.common.BeginningOfPreCombatMainTriggeredAbility;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.costs.common.TapTargetCost;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.effects.common.DoIfCostPaid;
+import mage.abilities.effects.common.TransformSourceEffect;
+import mage.abilities.keyword.TransformAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SuperType;
+import mage.constants.TargetController;
+import mage.filter.common.FilterControlledPermanent;
+import mage.filter.predicate.Predicates;
+import mage.filter.predicate.permanent.TappedPredicate;
+import mage.game.permanent.token.GnomeSoldierStarStarToken;
+import mage.target.common.TargetControlledPermanent;
+
+import java.util.UUID;
+
+/**
+ * @author Susucr
+ */
+public final class ThousandMoonsSmithy extends CardImpl {
+
+    public static final FilterControlledPermanent filter =
+            new FilterControlledPermanent("untapped artifacts and/or creatures you control");
+
+    static {
+        filter.add(TappedPredicate.UNTAPPED);
+        filter.add(Predicates.or(
+                CardType.CREATURE.getPredicate(),
+                CardType.ARTIFACT.getPredicate()
+        ));
+    }
+
+    public ThousandMoonsSmithy(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{2}{W}{W}");
+        this.secondSideCardClazz = mage.cards.b.BarracksOfTheThousand.class;
+
+        this.supertype.add(SuperType.LEGENDARY);
+
+        // When Thousand Moons Smithy enters the battlefield, create a white Gnome Soldier artifact creature token with "This creature's power and toughness are each equal to the number of artifacts and/or creatures you control."
+        this.addAbility(new EntersBattlefieldTriggeredAbility(new CreateTokenEffect(new GnomeSoldierStarStarToken())));
+
+        // At the beginning of your precombat main phase, you may tap five untapped artifacts and/or creatures you control. If you do, transform Thousand Moons Smithy.
+        this.addAbility(new TransformAbility());
+        this.addAbility(new BeginningOfPreCombatMainTriggeredAbility(
+                new DoIfCostPaid(
+                        new TransformSourceEffect(),
+                        new TapTargetCost(new TargetControlledPermanent(5, filter))
+                ),
+                TargetController.YOU,
+                false
+        ));
+    }
+
+    private ThousandMoonsSmithy(final ThousandMoonsSmithy card) {
+        super(card);
+    }
+
+    @Override
+    public ThousandMoonsSmithy copy() {
+        return new ThousandMoonsSmithy(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/TheLostCavernsOfIxalan.java b/Mage.Sets/src/mage/sets/TheLostCavernsOfIxalan.java
index e5d0e73e0ca..bbcf61d6fde 100644
--- a/Mage.Sets/src/mage/sets/TheLostCavernsOfIxalan.java
+++ b/Mage.Sets/src/mage/sets/TheLostCavernsOfIxalan.java
@@ -54,6 +54,7 @@ public final class TheLostCavernsOfIxalan extends ExpansionSet {
         cards.add(new SetCardInfo("Another Chance", 90, Rarity.COMMON, mage.cards.a.AnotherChance.class));
         cards.add(new SetCardInfo("Armored Kincaller", 174, Rarity.COMMON, mage.cards.a.ArmoredKincaller.class));
         cards.add(new SetCardInfo("Attentive Sunscribe", 4, Rarity.COMMON, mage.cards.a.AttentiveSunscribe.class));
+        cards.add(new SetCardInfo("Barracks of the Thousand", 39, Rarity.RARE, mage.cards.b.BarracksOfTheThousand.class));
         cards.add(new SetCardInfo("Bartolome del Presidio", 224, Rarity.UNCOMMON, mage.cards.b.BartolomeDelPresidio.class));
         cards.add(new SetCardInfo("Basking Capybara", 175, Rarity.COMMON, mage.cards.b.BaskingCapybara.class));
         cards.add(new SetCardInfo("Bat Colony", 5, Rarity.UNCOMMON, mage.cards.b.BatColony.class));
@@ -327,6 +328,7 @@ public final class TheLostCavernsOfIxalan extends ExpansionSet {
         cards.add(new SetCardInfo("The Skullspore Nexus", 212, Rarity.MYTHIC, mage.cards.t.TheSkullsporeNexus.class));
         cards.add(new SetCardInfo("Thousand Moons Crackshot", 37, Rarity.COMMON, mage.cards.t.ThousandMoonsCrackshot.class));
         cards.add(new SetCardInfo("Thousand Moons Infantry", 38, Rarity.COMMON, mage.cards.t.ThousandMoonsInfantry.class));
+        cards.add(new SetCardInfo("Thousand Moons Smithy", 39, Rarity.RARE, mage.cards.t.ThousandMoonsSmithy.class));
         cards.add(new SetCardInfo("Thrashing Brontodon", 216, Rarity.UNCOMMON, mage.cards.t.ThrashingBrontodon.class));
         cards.add(new SetCardInfo("Threefold Thunderhulk", 265, Rarity.RARE, mage.cards.t.ThreefoldThunderhulk.class));
         cards.add(new SetCardInfo("Throne of the Grim Captain", 266, Rarity.RARE, mage.cards.t.ThroneOfTheGrimCaptain.class));
diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/single/lci/BarracksOfTheThousandTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/single/lci/BarracksOfTheThousandTest.java
new file mode 100644
index 00000000000..e8f4545b1e4
--- /dev/null
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/single/lci/BarracksOfTheThousandTest.java
@@ -0,0 +1,141 @@
+package org.mage.test.cards.single.lci;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ * @author Susucr
+ */
+public class BarracksOfTheThousandTest extends CardTestPlayerBase {
+
+    /**
+     * {@link mage.cards.t.ThousandMoonsSmithy} {2}{W}{W} <br>
+     * Legendary Artifact <br>
+     * When Thousand Moons Smithy enters the battlefield, create a white Gnome Soldier artifact creature token with “This creature’s power and toughness are each equal to the number of artifacts and/or creatures you control.”  <br>
+     * At the beginning of your precombat main phase, you may tap five untapped artifacts and/or creatures you control. If you do, transform Thousand Moons Smithy.
+     */
+    private static final String smithy = "Thousand Moons Smithy";
+    /**
+     * {@link mage.cards.b.BarracksOfTheThousand} <br>
+     * Legendary Artifact Land <br>
+     * {T}: Add {W}. <br>
+     * Whenever you cast an artifact or creature spell using mana produced by Barracks of the Thousand, create a white Gnome Soldier artifact creature token with “This creature’s power and toughness are each equal to the number of artifacts and/or creatures you control.” <br>
+     */
+    private static final String barracks = "Barracks of the Thousand";
+
+    private void initToTransform() {
+        addCard(Zone.BATTLEFIELD, playerA, smithy);
+        addCard(Zone.BATTLEFIELD, playerA, "Balduvian Bears");
+        addCard(Zone.BATTLEFIELD, playerA, "Bear Cub");
+        addCard(Zone.BATTLEFIELD, playerA, "Forest Bear");
+        addCard(Zone.BATTLEFIELD, playerA, "Grizzly Bears");
+        addCard(Zone.BATTLEFIELD, playerA, "Runeclaw Bear");
+
+        // First mainphase, transform the smithy tapping all the bears
+        setChoice(playerA, true); // yes to "you may tap"
+        setChoice(playerA, "Balduvian Bears^Bear Cub^Forest Bear^Grizzly Bears^Runeclaw Bear");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+    }
+
+    @Test
+    public void trigger_simple() {
+        setStrictChooseMode(true);
+
+        addCard(Zone.HAND, playerA, "Arcbound Worker", 1);
+        initToTransform();
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Arcbound Worker");
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Gnome Soldier Token", 1);
+        assertPermanentCount(playerA, "Arcbound Worker", 1);
+    }
+
+    @Test
+    public void trigger_onlyonce_doublemana() {
+        setStrictChooseMode(true);
+
+        addCard(Zone.BATTLEFIELD, playerB, "Heartbeat of Spring");
+        addCard(Zone.HAND, playerA, "Armored Warhorse");
+        initToTransform();
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Armored Warhorse");
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Gnome Soldier Token", 1);
+        assertPermanentCount(playerA, "Armored Warhorse", 1);
+    }
+
+
+    @Test
+    public void noTrigger_NotPaidWithBarrack() {
+        setStrictChooseMode(true);
+
+        addCard(Zone.HAND, playerA, "Memnite", 1);
+        initToTransform();
+
+        // Memnite cost 0 so no mana is spend from Barracks.
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Memnite");
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Gnome Soldier Token", 0);
+        assertPermanentCount(playerA, "Memnite", 1);
+    }
+
+    @Test
+    public void noTrigger_notCheck() {
+        setStrictChooseMode(true);
+
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 2);
+        addCard(Zone.HAND, playerA, "Divination", 1);
+        initToTransform();
+
+        // Sorcery, doesn't trigger Barrack
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Divination");
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Gnome Soldier Token", 0);
+        assertGraveyardCount(playerA, "Divination", 1);
+    }
+
+    @Test
+    public void noTrigger_afterRemand() {
+        setStrictChooseMode(true);
+
+        addCard(Zone.HAND, playerB, "Remand");
+        addCard(Zone.BATTLEFIELD, playerB, "Island", 2);
+
+        addCard(Zone.HAND, playerA, "Arcbound Worker");
+        addCard(Zone.HAND, playerA, "Plains", 1); // to cast the second time
+        initToTransform();
+
+        castSpell(3, PhaseStep.PRECOMBAT_MAIN, playerA, "Arcbound Worker");
+        castSpell(3, PhaseStep.PRECOMBAT_MAIN, playerB, "Remand", "Arcbound Worker", "Arcbound Worker");
+
+        checkGraveyardCount("Remand in graveyard", 3, PhaseStep.BEGIN_COMBAT, playerB, "Remand", 1);
+        checkHandCardCount("Worker in hand", 3, PhaseStep.BEGIN_COMBAT, playerA, "Arcbound Worker", 1);
+        checkPermanentCount("Gnome Soldier Token on battlefield", 3, PhaseStep.BEGIN_COMBAT, playerA, "Gnome Soldier Token", 1);
+
+        playLand(3, PhaseStep.POSTCOMBAT_MAIN, playerA, "Plains");
+        waitStackResolved(3, PhaseStep.POSTCOMBAT_MAIN);
+        castSpell(3, PhaseStep.POSTCOMBAT_MAIN, playerA, "Arcbound Worker");
+
+        setStopAt(3, PhaseStep.END_TURN);
+        execute();
+
+        assertPermanentCount(playerA, "Gnome Soldier Token", 1);
+        assertPermanentCount(playerA, "Arcbound Worker", 1);
+        assertGraveyardCount(playerB, "Remand", 1);
+    }
+
+}
diff --git a/Mage/src/main/java/mage/abilities/common/CastSpellPaidBySourceTriggeredAbility.java b/Mage/src/main/java/mage/abilities/common/CastSpellPaidBySourceTriggeredAbility.java
new file mode 100644
index 00000000000..501f68e9c74
--- /dev/null
+++ b/Mage/src/main/java/mage/abilities/common/CastSpellPaidBySourceTriggeredAbility.java
@@ -0,0 +1,77 @@
+package mage.abilities.common;
+
+
+import mage.MageObjectReference;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.constants.Zone;
+import mage.filter.FilterSpell;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.stack.Spell;
+import mage.target.targetpointer.FixedTarget;
+import mage.watchers.common.ManaPaidObjectSourceWatcher;
+
+/**
+ * @author Susucr
+ */
+public class CastSpellPaidBySourceTriggeredAbility extends TriggeredAbilityImpl {
+
+    private final FilterSpell filter;
+    private final boolean setTargetPointer;
+
+    public CastSpellPaidBySourceTriggeredAbility(Effect effect, FilterSpell filter, boolean setTargetPointer) {
+        super(Zone.BATTLEFIELD, effect);
+        setTriggerPhrase("Whenever you cast " + filter.getMessage() + " using mana produced by {this}, ");
+        addWatcher(new ManaPaidObjectSourceWatcher());
+
+        this.filter = filter;
+        this.setTargetPointer = setTargetPointer;
+    }
+
+    protected CastSpellPaidBySourceTriggeredAbility(final CastSpellPaidBySourceTriggeredAbility ability) {
+        super(ability);
+        this.filter = ability.filter;
+        this.setTargetPointer = ability.setTargetPointer;
+    }
+
+    @Override
+    public CastSpellPaidBySourceTriggeredAbility copy() {
+        return new CastSpellPaidBySourceTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.SPELL_CAST;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (!controllerId.equals(event.getPlayerId())) {
+            return false;
+        }
+
+        Spell spell = game.getSpell(event.getTargetId());
+        if (spell == null || !this.filter.match(spell, controllerId, this, game)) {
+            return false;
+        }
+
+        ManaPaidObjectSourceWatcher watcher = game.getState().getWatcher(ManaPaidObjectSourceWatcher.class);
+        if (watcher == null) {
+            return false;
+        }
+
+        if (!watcher.checkManaFromSourceWasUsedToPay(
+                new MageObjectReference(sourceId, game),
+                new MageObjectReference(spell.getSourceId(), game)
+        )) {
+            return false;
+        }
+
+        if (setTargetPointer) {
+            this.getAllEffects().setTargetPointer(new FixedTarget(spell.getId(), game));
+        }
+
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/Mage/src/main/java/mage/game/permanent/token/GnomeSoldierStarStarToken.java b/Mage/src/main/java/mage/game/permanent/token/GnomeSoldierStarStarToken.java
new file mode 100644
index 00000000000..26ce636116f
--- /dev/null
+++ b/Mage/src/main/java/mage/game/permanent/token/GnomeSoldierStarStarToken.java
@@ -0,0 +1,49 @@
+package mage.game.permanent.token;
+
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.dynamicvalue.common.PermanentsOnBattlefieldCount;
+import mage.abilities.effects.common.continuous.SetBasePowerToughnessSourceEffect;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.filter.common.FilterControlledPermanent;
+import mage.filter.predicate.Predicates;
+
+/**
+ * @author Susucr
+ */
+public final class GnomeSoldierStarStarToken extends TokenImpl {
+
+    private static final FilterControlledPermanent filter = new FilterControlledPermanent();
+
+    static {
+        filter.add(Predicates.or(
+                CardType.ARTIFACT.getPredicate(),
+                CardType.CREATURE.getPredicate()
+        ));
+    }
+
+    private static final DynamicValue xValue = new PermanentsOnBattlefieldCount(filter);
+
+    public GnomeSoldierStarStarToken() {
+        super("Gnome Soldier Token", "white Gnome Soldier artifact creature token with "
+                + "\"this creature's power and toughness are each equal to the number of artifacts and/or creatures you control.\"");
+        cardType.add(CardType.ARTIFACT);
+        cardType.add(CardType.CREATURE);
+        subtype.add(SubType.GNOME);
+        subtype.add(SubType.SOLDIER);
+        color.setWhite(true);
+
+        this.addAbility(new SimpleStaticAbility(new SetBasePowerToughnessSourceEffect(
+                xValue
+        ).setText("this creature's power and toughness are each equal to the number of artifacts and/or creatures you control")));
+    }
+
+    protected GnomeSoldierStarStarToken(final GnomeSoldierStarStarToken token) {
+        super(token);
+    }
+
+    public GnomeSoldierStarStarToken copy() {
+        return new GnomeSoldierStarStarToken(this);
+    }
+}
diff --git a/Mage/src/main/java/mage/watchers/common/ManaPaidObjectSourceWatcher.java b/Mage/src/main/java/mage/watchers/common/ManaPaidObjectSourceWatcher.java
new file mode 100644
index 00000000000..70e3717f976
--- /dev/null
+++ b/Mage/src/main/java/mage/watchers/common/ManaPaidObjectSourceWatcher.java
@@ -0,0 +1,54 @@
+package mage.watchers.common;
+
+import mage.MageObject;
+import mage.MageObjectReference;
+import mage.constants.WatcherScope;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ManaPaidEvent;
+import mage.watchers.Watcher;
+
+import java.util.*;
+
+/**
+ * @author Susucr
+ */
+public class ManaPaidObjectSourceWatcher extends Watcher {
+
+    // what is paid -> set of all MageObject sources used to pay for the mana.
+    private final Map<MageObjectReference, Set<MageObjectReference>> payMap = new HashMap<>();
+
+    public ManaPaidObjectSourceWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.MANA_PAID) {
+            return;
+        }
+
+        ManaPaidEvent manaEvent = (ManaPaidEvent) event;
+        UUID paid = manaEvent.getSourcePaidId();
+        MageObject sourceObject = manaEvent.getSourceObject();
+        if (paid == null || sourceObject == null) {
+            return;
+        }
+
+        payMap
+                .computeIfAbsent(new MageObjectReference(paid, game), x -> new HashSet<>())
+                .add(new MageObjectReference(sourceObject, game));
+    }
+
+    public boolean checkManaFromSourceWasUsedToPay(MageObjectReference sourceOfMana, MageObjectReference paidObject) {
+        return payMap
+                .getOrDefault(paidObject, Collections.emptySet())
+                .contains(sourceOfMana);
+    }
+
+    @Override
+    public void reset() {
+        payMap.clear();
+        super.reset();
+    }
+}