diff --git a/Mage.Server.Plugins/Mage.Deck.Constructed/src/mage/deck/AbstractCommander.java b/Mage.Server.Plugins/Mage.Deck.Constructed/src/mage/deck/AbstractCommander.java
index 523aac06c74..5eeada82573 100644
--- a/Mage.Server.Plugins/Mage.Deck.Constructed/src/mage/deck/AbstractCommander.java
+++ b/Mage.Server.Plugins/Mage.Deck.Constructed/src/mage/deck/AbstractCommander.java
@@ -27,7 +27,8 @@ public abstract class AbstractCommander extends Constructed {
             PartnerValidator.instance,
             FriendsForeverValidator.instance,
             PartnerWithValidator.instance,
-            ChooseABackgroundValidator.instance
+            ChooseABackgroundValidator.instance,
+            DoctorsCompanionValidator.instance
     );
     protected final List<String> bannedCommander = new ArrayList<>();
     protected final List<String> bannedPartner = new ArrayList<>();
diff --git a/Mage.Sets/src/mage/cards/t/TheThirteenthDoctor.java b/Mage.Sets/src/mage/cards/t/TheThirteenthDoctor.java
new file mode 100644
index 00000000000..70c628dc7c0
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/t/TheThirteenthDoctor.java
@@ -0,0 +1,69 @@
+package mage.cards.t;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfEndStepTriggeredAbility;
+import mage.abilities.common.SpellCastControllerTriggeredAbility;
+import mage.abilities.effects.common.UntapAllEffect;
+import mage.abilities.effects.common.counter.AddCountersTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.counters.CounterType;
+import mage.filter.FilterPermanent;
+import mage.filter.FilterSpell;
+import mage.filter.common.FilterControlledCreaturePermanent;
+import mage.filter.predicate.Predicates;
+import mage.filter.predicate.card.CastFromZonePredicate;
+import mage.filter.predicate.permanent.CounterAnyPredicate;
+import mage.target.common.TargetCreaturePermanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class TheThirteenthDoctor extends CardImpl {
+
+    private static final FilterSpell filter
+            = new FilterSpell("a spell from anywhere other than your hand");
+    private static final FilterPermanent filter2
+            = new FilterControlledCreaturePermanent("creature you control with a counter on it");
+
+    static {
+        filter.add(Predicates.not(new CastFromZonePredicate(Zone.HAND)));
+        filter2.add(CounterAnyPredicate.instance);
+    }
+
+    public TheThirteenthDoctor(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{G}{U}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.TIME_LORD);
+        this.subtype.add(SubType.DOCTOR);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(2);
+
+        // Paradox -- Whenever you cast a spell from anywhere other than your hand, put a +1/+1 counter on target creature.
+        Ability ability = new SpellCastControllerTriggeredAbility(
+                new AddCountersTargetEffect(CounterType.P1P1.createInstance()), filter, false
+        );
+        ability.addTarget(new TargetCreaturePermanent());
+        this.addAbility(ability.withFlavorWord("Paradox"));
+
+        // Team TARDIS -- At the beginning of your end step, untap each creature you control with a counter on it.
+        this.addAbility(new BeginningOfEndStepTriggeredAbility(
+                new UntapAllEffect(filter2), TargetController.YOU, false
+        ).withFlavorWord("Team TARDIS"));
+
+    }
+
+    private TheThirteenthDoctor(final TheThirteenthDoctor card) {
+        super(card);
+    }
+
+    @Override
+    public TheThirteenthDoctor copy() {
+        return new TheThirteenthDoctor(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/DoctorWho.java b/Mage.Sets/src/mage/sets/DoctorWho.java
index 166f21359cb..da5a81055d3 100644
--- a/Mage.Sets/src/mage/sets/DoctorWho.java
+++ b/Mage.Sets/src/mage/sets/DoctorWho.java
@@ -26,6 +26,7 @@ public final class DoctorWho extends ExpansionSet {
         cards.add(new SetCardInfo("Plains", 197, Rarity.LAND, mage.cards.basiclands.Plains.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Sarah Jane Smith", 6, Rarity.RARE, mage.cards.s.SarahJaneSmith.class));
         cards.add(new SetCardInfo("Swamp", 201, Rarity.LAND, mage.cards.basiclands.Swamp.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("The Thirteenth Doctor", 4, Rarity.MYTHIC, mage.cards.t.TheThirteenthDoctor.class));
         cards.add(new SetCardInfo("Yasmin Khan", 7, Rarity.RARE, mage.cards.y.YasminKhan.class));
     }
 }
diff --git a/Mage/src/main/java/mage/constants/SubType.java b/Mage/src/main/java/mage/constants/SubType.java
index 5360eb685cc..8256fca6474 100644
--- a/Mage/src/main/java/mage/constants/SubType.java
+++ b/Mage/src/main/java/mage/constants/SubType.java
@@ -138,6 +138,7 @@ public enum SubType {
     DEVIL("Devil", SubTypeSet.CreatureType),
     DINOSAUR("Dinosaur", SubTypeSet.CreatureType), // With Ixalan now being spoiled, need this to be selectable
     DJINN("Djinn", SubTypeSet.CreatureType),
+    DOCTOR("Doctor", SubTypeSet.CreatureType),
     DOG("Dog", SubTypeSet.CreatureType),
     DRAGON("Dragon", SubTypeSet.CreatureType),
     DRAKE("Drake", SubTypeSet.CreatureType),
@@ -378,6 +379,7 @@ public enum SubType {
     THALAKOS("Thalakos", SubTypeSet.CreatureType),
     THOPTER("Thopter", SubTypeSet.CreatureType),
     TIEFLING("Tiefling", SubTypeSet.CreatureType),
+    TIME_LORD("Time Lord", SubTypeSet.CreatureType),
     TRANDOSHAN("Trandoshan", SubTypeSet.CreatureType, true), // Star Wars
     THRULL("Thrull", SubTypeSet.CreatureType),
     TREEFOLK("Treefolk", SubTypeSet.CreatureType),
diff --git a/Mage/src/main/java/mage/util/validation/DoctorsCompanionValidator.java b/Mage/src/main/java/mage/util/validation/DoctorsCompanionValidator.java
new file mode 100644
index 00000000000..38146f15e10
--- /dev/null
+++ b/Mage/src/main/java/mage/util/validation/DoctorsCompanionValidator.java
@@ -0,0 +1,34 @@
+package mage.util.validation;
+
+import mage.abilities.keyword.DoctorsCompanionAbility;
+import mage.cards.Card;
+import mage.constants.SubType;
+
+/**
+ * @author TheElk801
+ * <p>
+ * We check for Brushwagg because it can't be a changeling
+ */
+public enum DoctorsCompanionValidator implements CommanderValidator {
+    instance;
+
+    @Override
+    public boolean checkPartner(Card commander1, Card commander2) {
+        return commander1.getAbilities().containsClass(DoctorsCompanionAbility.class)
+                && commander2.hasSubTypeForDeckbuilding(SubType.TIME_LORD)
+                && commander2.hasSubTypeForDeckbuilding(SubType.DOCTOR)
+                && !commander2.hasSubTypeForDeckbuilding(SubType.BRUSHWAGG);
+    }
+
+    @Override
+    public boolean checkBothPartners(Card commander1, Card commander2) {
+        return checkPartner(commander1, commander2) || checkPartner(commander2, commander1);
+    }
+
+    @Override
+    public boolean specialCheck(Card commander) {
+        return commander.hasSubTypeForDeckbuilding(SubType.TIME_LORD)
+                && commander.hasSubTypeForDeckbuilding(SubType.DOCTOR)
+                && !commander.hasSubTypeForDeckbuilding(SubType.BRUSHWAGG);
+    }
+}