From ac3789f4805919caa720beeacbb88fec56be469e Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Tue, 26 Apr 2022 21:32:20 -0400
Subject: [PATCH] [NCC] Implemented Aven Courier

---
 Mage.Sets/src/mage/cards/a/AvenCourier.java   | 119 ++++++++++++++++++
 .../src/mage/sets/NewCapennaCommander.java    |   1 +
 2 files changed, 120 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/a/AvenCourier.java

diff --git a/Mage.Sets/src/mage/cards/a/AvenCourier.java b/Mage.Sets/src/mage/cards/a/AvenCourier.java
new file mode 100644
index 00000000000..559b52d0fdb
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/a/AvenCourier.java
@@ -0,0 +1,119 @@
+package mage.cards.a;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.AttacksTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.keyword.FlyingAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.choices.Choice;
+import mage.choices.ChoiceImpl;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.SubType;
+import mage.counters.CounterType;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.common.TargetControlledPermanent;
+import mage.util.CardUtil;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * @author TheElk801
+ */
+public final class AvenCourier extends CardImpl {
+
+    public AvenCourier(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{U}");
+
+        this.subtype.add(SubType.BIRD);
+        this.subtype.add(SubType.ADVISOR);
+        this.power = new MageInt(1);
+        this.toughness = new MageInt(1);
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // Whenever Aven Courier attacks, choose a counter on a permanent you control. Put a counter of that kind on target permanent you control if it doesn't have a counter of that kind on it.
+        Ability ability = new AttacksTriggeredAbility(new AvenCourierEffect());
+        ability.addTarget(new TargetControlledPermanent());
+        this.addAbility(ability);
+    }
+
+    private AvenCourier(final AvenCourier card) {
+        super(card);
+    }
+
+    @Override
+    public AvenCourier copy() {
+        return new AvenCourier(this);
+    }
+}
+
+class AvenCourierEffect extends OneShotEffect {
+
+    AvenCourierEffect() {
+        super(Outcome.Benefit);
+        staticText = "choose a counter on a permanent you control. Put a counter of that kind " +
+                "on target permanent you control if it doesn't have a counter of that kind on it";
+    }
+
+    private AvenCourierEffect(final AvenCourierEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public AvenCourierEffect copy() {
+        return new AvenCourierEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
+        if (player == null || permanent == null) {
+            return false;
+        }
+        Set<String> counterTypes = game
+                .getBattlefield()
+                .getActivePermanents(
+                        StaticFilters.FILTER_CONTROLLED_PERMANENT,
+                        source.getControllerId(), source, game
+                ).stream()
+                .map(p -> p.getCounters(game))
+                .map(HashMap::keySet)
+                .flatMap(Collection::stream)
+                .distinct()
+                .collect(Collectors.toSet());
+        String counterType;
+        switch (counterTypes.size()) {
+            case 0:
+                return false;
+            case 1:
+                counterType = counterTypes.iterator().next();
+                break;
+            case 2:
+                Iterator<String> iterator = counterTypes.iterator();
+                String type1 = iterator.next();
+                String type2 = iterator.next();
+                counterType = player.chooseUse(
+                        outcome, "Choose a counter to put on " + permanent.getName(), null,
+                        CardUtil.getTextWithFirstCharUpperCase(type1),
+                        CardUtil.getTextWithFirstCharUpperCase(type2), source, game
+                ) ? type1 : type2;
+                break;
+            default:
+                Choice choice = new ChoiceImpl(true);
+                choice.setChoices(counterTypes);
+                player.choose(outcome, choice, game);
+                counterType = choice.getChoice();
+        }
+        return permanent.getCounters(game).getCount(counterType) < 1
+                && permanent.addCounters(CounterType.findByName(counterType).createInstance(), source, game);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/NewCapennaCommander.java b/Mage.Sets/src/mage/sets/NewCapennaCommander.java
index 5f3fd585557..85226e82bf2 100644
--- a/Mage.Sets/src/mage/sets/NewCapennaCommander.java
+++ b/Mage.Sets/src/mage/sets/NewCapennaCommander.java
@@ -36,6 +36,7 @@ public final class NewCapennaCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Audacious Swap", 44, Rarity.RARE, mage.cards.a.AudaciousSwap.class));
         cards.add(new SetCardInfo("Aura Mutation", 328, Rarity.RARE, mage.cards.a.AuraMutation.class));
         cards.add(new SetCardInfo("Austere Command", 193, Rarity.RARE, mage.cards.a.AustereCommand.class));
+        cards.add(new SetCardInfo("Aven Courier", 22, Rarity.RARE, mage.cards.a.AvenCourier.class));
         cards.add(new SetCardInfo("Aven Mimeomancer", 329, Rarity.RARE, mage.cards.a.AvenMimeomancer.class));
         cards.add(new SetCardInfo("Avenger of Zendikar", 280, Rarity.MYTHIC, mage.cards.a.AvengerOfZendikar.class));
         cards.add(new SetCardInfo("Avenging Huntbonder", 194, Rarity.RARE, mage.cards.a.AvengingHuntbonder.class));