From c94ed2bf75f6d6a6c9f1539824af9ccbf06631d1 Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Fri, 21 Jun 2019 20:56:39 -0400
Subject: [PATCH] Implemented Agent of Treachery

---
 .../src/mage/cards/a/AgentOfTreachery.java    | 71 +++++++++++++++++++
 Mage.Sets/src/mage/sets/CoreSet2020.java      |  1 +
 2 files changed, 72 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/a/AgentOfTreachery.java

diff --git a/Mage.Sets/src/mage/cards/a/AgentOfTreachery.java b/Mage.Sets/src/mage/cards/a/AgentOfTreachery.java
new file mode 100644
index 0000000000..52a67d10a8
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/a/AgentOfTreachery.java
@@ -0,0 +1,71 @@
+package mage.cards.a;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfEndStepTriggeredAbility;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.decorator.ConditionalInterveningIfTriggeredAbility;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
+import mage.abilities.effects.common.continuous.GainControlTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.constants.SubType;
+import mage.constants.TargetController;
+import mage.game.Game;
+import mage.target.TargetPermanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class AgentOfTreachery extends CardImpl {
+
+    public AgentOfTreachery(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{5}{U}{U}");
+
+        this.subtype.add(SubType.HUMAN);
+        this.subtype.add(SubType.ROGUE);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(3);
+
+        // When Agent of Treachery enters the battlefield, gain control of target permanent.
+        Ability ability = new EntersBattlefieldTriggeredAbility(new GainControlTargetEffect(Duration.Custom));
+        ability.addTarget(new TargetPermanent());
+        this.addAbility(ability);
+
+        // At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.
+        this.addAbility(new ConditionalInterveningIfTriggeredAbility(
+                new BeginningOfEndStepTriggeredAbility(
+                        new DrawCardSourceControllerEffect(3),
+                        TargetController.YOU, false
+                ), AgentOfTreacheryCondition.instance, "At the beginning of your end step, " +
+                "if you control three or more permanents you don't own, draw three cards."
+        ));
+    }
+
+    private AgentOfTreachery(final AgentOfTreachery card) {
+        super(card);
+    }
+
+    @Override
+    public AgentOfTreachery copy() {
+        return new AgentOfTreachery(this);
+    }
+}
+
+enum AgentOfTreacheryCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return game.getBattlefield()
+                .getAllActivePermanents(source.getControllerId())
+                .stream()
+                .map(permanent -> !permanent.getOwnerId().equals(source.getControllerId()))
+                .count() > 2;
+    }
+}
\ No newline at end of file
diff --git a/Mage.Sets/src/mage/sets/CoreSet2020.java b/Mage.Sets/src/mage/sets/CoreSet2020.java
index 0265687e6c..13d0795923 100644
--- a/Mage.Sets/src/mage/sets/CoreSet2020.java
+++ b/Mage.Sets/src/mage/sets/CoreSet2020.java
@@ -28,6 +28,7 @@ public final class CoreSet2020 extends ExpansionSet {
         this.maxCardNumberInBooster = 280;
 
         cards.add(new SetCardInfo("Aerial Assault", 1, Rarity.COMMON, mage.cards.a.AerialAssault.class));
+        cards.add(new SetCardInfo("Agent of Treachery", 43, Rarity.RARE, mage.cards.a.AgentOfTreachery.class));
         cards.add(new SetCardInfo("Ajani, Strength of the Pride", 2, Rarity.MYTHIC, mage.cards.a.AjaniStrengthOfThePride.class));
         cards.add(new SetCardInfo("Angel of Vitality", 4, Rarity.UNCOMMON, mage.cards.a.AngelOfVitality.class));
         cards.add(new SetCardInfo("Atemsis, All-Seeing", 46, Rarity.RARE, mage.cards.a.AtemsisAllSeeing.class));