diff --git a/Mage.Sets/src/mage/cards/t/TemplarKnight.java b/Mage.Sets/src/mage/cards/t/TemplarKnight.java
new file mode 100644
index 00000000000..25048966084
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/t/TemplarKnight.java
@@ -0,0 +1,77 @@
+package mage.cards.t;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.common.TapTargetCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.common.InfoEffect;
+import mage.abilities.effects.common.search.SearchLibraryPutInPlayEffect;
+import mage.abilities.keyword.VigilanceAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.filter.FilterCard;
+import mage.filter.common.FilterArtifactCard;
+import mage.filter.common.FilterControlledCreaturePermanent;
+import mage.filter.common.FilterControlledPermanent;
+import mage.filter.predicate.mageobject.NamePredicate;
+import mage.filter.predicate.permanent.AttackingPredicate;
+import mage.filter.predicate.permanent.TappedPredicate;
+import mage.target.common.TargetCardInLibrary;
+import mage.target.common.TargetControlledPermanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class TemplarKnight extends CardImpl {
+
+    private static final FilterCard filter = new FilterArtifactCard("a legendary artifact card");
+    private static final FilterControlledPermanent filter2
+            = new FilterControlledCreaturePermanent("untapped attacking creatures you control named Templar Knight");
+
+    static {
+        filter.add(SuperType.LEGENDARY.getPredicate());
+        filter2.add(TappedPredicate.UNTAPPED);
+        filter2.add(AttackingPredicate.instance);
+        filter2.add(new NamePredicate("Templar Knight"));
+    }
+
+    public TemplarKnight(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{W}");
+
+        this.subtype.add(SubType.HUMAN);
+        this.subtype.add(SubType.KNIGHT);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(1);
+
+        // Vigilance
+        this.addAbility(VigilanceAbility.getInstance());
+
+        // {W}, Tap five untapped attacking creatures you control named Templar Knight: Search your library for a legendary artifact card, put it onto the battlefield, then shuffle.
+        Ability ability = new SimpleActivatedAbility(
+                new SearchLibraryPutInPlayEffect(new TargetCardInLibrary(filter)), new ManaCostsImpl<>("{W}")
+        );
+        ability.addCost(new TapTargetCost(new TargetControlledPermanent(5, filter2)));
+        this.addAbility(ability);
+
+        // A deck can have any number of cards named Templar Knight.
+        this.addAbility(new SimpleStaticAbility(new InfoEffect(
+                "a deck can have any number of cards named Templar Knight"
+        )));
+    }
+
+    private TemplarKnight(final TemplarKnight card) {
+        super(card);
+    }
+
+    @Override
+    public TemplarKnight copy() {
+        return new TemplarKnight(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/AssassinsCreed.java b/Mage.Sets/src/mage/sets/AssassinsCreed.java
index 6454024623a..a8970a4dc0e 100644
--- a/Mage.Sets/src/mage/sets/AssassinsCreed.java
+++ b/Mage.Sets/src/mage/sets/AssassinsCreed.java
@@ -49,6 +49,7 @@ public final class AssassinsCreed extends ExpansionSet {
         cards.add(new SetCardInfo("Surtr, Fiery Jotun", 293, Rarity.RARE, mage.cards.s.SurtrFieryJotun.class));
         cards.add(new SetCardInfo("Sword of Feast and Famine", 99, Rarity.MYTHIC, mage.cards.s.SwordOfFeastAndFamine.class));
         cards.add(new SetCardInfo("Sword of Light and Shadow", 100, Rarity.MYTHIC, mage.cards.s.SwordOfLightAndShadow.class));
+        cards.add(new SetCardInfo("Templar Knight", 10, Rarity.UNCOMMON, mage.cards.t.TemplarKnight.class));
         cards.add(new SetCardInfo("Temporal Trespass", 86, Rarity.MYTHIC, mage.cards.t.TemporalTrespass.class));
         cards.add(new SetCardInfo("The Animus", 69, Rarity.RARE, mage.cards.t.TheAnimus.class));
         cards.add(new SetCardInfo("The Spear of Leonidas", 38, Rarity.RARE, mage.cards.t.TheSpearOfLeonidas.class));
diff --git a/Mage/src/main/java/mage/cards/decks/DeckValidator.java b/Mage/src/main/java/mage/cards/decks/DeckValidator.java
index eb2bd19506e..464968e2185 100644
--- a/Mage/src/main/java/mage/cards/decks/DeckValidator.java
+++ b/Mage/src/main/java/mage/cards/decks/DeckValidator.java
@@ -30,6 +30,7 @@ public abstract class DeckValidator implements Serializable {
     ));
 
     public static final HashSet<String> ALL_BASIC_LAND_NAMES = new HashSet<>();
+
     {
         ALL_BASIC_LAND_NAMES.addAll(MAIN_BASIC_LAND_NAMES);
         ALL_BASIC_LAND_NAMES.addAll(ADDITIONAL_BASIC_LAND_NAMES);
@@ -46,6 +47,7 @@ public abstract class DeckValidator implements Serializable {
         maxCopiesMap.put("Persistent Petitioners", Integer.MAX_VALUE);
         maxCopiesMap.put("Dragon's Approach", Integer.MAX_VALUE);
         maxCopiesMap.put("Slime Against Humanity", Integer.MAX_VALUE);
+        maxCopiesMap.put("Templar Knight", Integer.MAX_VALUE);
         maxCopiesMap.put("Once More with Feeling", 1);
         maxCopiesMap.put("Seven Dwarves", 7);
         maxCopiesMap.put("Nazgul", 9);