From 6fbdc86ed8b3bddbeadc4d9f9f515d4f56c9b501 Mon Sep 17 00:00:00 2001
From: theelk801 <theelk801@gmail.com>
Date: Sun, 16 Nov 2025 17:31:41 -0500
Subject: [PATCH] [TLE] Implement Dutiful Knowledge Seeker

---
 .../mage/cards/d/DutifulKnowledgeSeeker.java  | 93 +++++++++++++++++++
 .../sets/AvatarTheLastAirbenderEternal.java   |  1 +
 2 files changed, 94 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/d/DutifulKnowledgeSeeker.java

diff --git a/Mage.Sets/src/mage/cards/d/DutifulKnowledgeSeeker.java b/Mage.Sets/src/mage/cards/d/DutifulKnowledgeSeeker.java
new file mode 100644
index 00000000000..1b188ac2554
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/d/DutifulKnowledgeSeeker.java
@@ -0,0 +1,93 @@
+package mage.cards.d;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.BatchTriggeredAbility;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.common.PutOnLibraryTargetEffect;
+import mage.abilities.effects.common.counter.AddCountersSourceEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.constants.Zone;
+import mage.counters.CounterType;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeBatchEvent;
+import mage.game.events.ZoneChangeEvent;
+import mage.target.common.TargetCardInGraveyard;
+
+import java.util.Objects;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class DutifulKnowledgeSeeker extends CardImpl {
+
+    public DutifulKnowledgeSeeker(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{U}");
+
+        this.subtype.add(SubType.FOX);
+        this.subtype.add(SubType.SPIRIT);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(2);
+
+        // Whenever one or more cards are put into a library from anywhere, put a +1/+1 counter on this creature.
+        this.addAbility(new DutifulKnowledgeSeekerTriggeredAbility());
+
+        // {3}: Put target card from a graveyard on the bottom of its owner's library.
+        Ability ability = new SimpleActivatedAbility(new PutOnLibraryTargetEffect(false), new GenericManaCost(3));
+        ability.addTarget(new TargetCardInGraveyard());
+        this.addAbility(ability);
+    }
+
+    private DutifulKnowledgeSeeker(final DutifulKnowledgeSeeker card) {
+        super(card);
+    }
+
+    @Override
+    public DutifulKnowledgeSeeker copy() {
+        return new DutifulKnowledgeSeeker(this);
+    }
+}
+
+class DutifulKnowledgeSeekerTriggeredAbility extends TriggeredAbilityImpl implements BatchTriggeredAbility<ZoneChangeEvent> {
+
+    DutifulKnowledgeSeekerTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new AddCountersSourceEffect(CounterType.P1P1.createInstance()));
+        this.setTriggerPhrase("Whenever one or more cards are put into a library from anywhere, ");
+    }
+
+    private DutifulKnowledgeSeekerTriggeredAbility(final DutifulKnowledgeSeekerTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public DutifulKnowledgeSeekerTriggeredAbility copy() {
+        return new DutifulKnowledgeSeekerTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ZONE_CHANGE_BATCH;
+    }
+
+    @Override
+    public boolean checkEvent(ZoneChangeEvent event, Game game) {
+        return Zone.LIBRARY.match(event.getToZone());
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        return this
+                .getFilteredEvents((ZoneChangeBatchEvent) event, game)
+                .stream()
+                .map(GameEvent::getTargetId)
+                .map(game::getCard)
+                .anyMatch(Objects::nonNull);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java b/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
index b5788a8cf8e..b466256bcbc 100644
--- a/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
+++ b/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
@@ -101,6 +101,7 @@ public final class AvatarTheLastAirbenderEternal extends ExpansionSet {
         cards.add(new SetCardInfo("Dramatic Reversal", 158, Rarity.COMMON, mage.cards.d.DramaticReversal.class));
         cards.add(new SetCardInfo("Drannith Magistrate", 2, Rarity.MYTHIC, mage.cards.d.DrannithMagistrate.class));
         cards.add(new SetCardInfo("Duelist's Heritage", 153, Rarity.RARE, mage.cards.d.DuelistsHeritage.class));
+        cards.add(new SetCardInfo("Dutiful Knowledge Seeker", 92, Rarity.UNCOMMON, mage.cards.d.DutifulKnowledgeSeeker.class));
         cards.add(new SetCardInfo("Earthbending Student", 249, Rarity.UNCOMMON, mage.cards.e.EarthbendingStudent.class));
         cards.add(new SetCardInfo("Earthshape", 67, Rarity.RARE, mage.cards.e.Earthshape.class));
         cards.add(new SetCardInfo("Eel-Hounds", 250, Rarity.UNCOMMON, mage.cards.e.EelHounds.class));