From beaae98bd12a1bfde637fcc2d06e850ddb7243be Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Mon, 19 Apr 2021 08:38:11 -0400
Subject: [PATCH] [C21] Implemented Author of Shadows

---
 .../src/mage/cards/a/AuthorOfShadows.java     | 96 +++++++++++++++++++
 .../src/mage/sets/Commander2021Edition.java   |  1 +
 2 files changed, 97 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/a/AuthorOfShadows.java

diff --git a/Mage.Sets/src/mage/cards/a/AuthorOfShadows.java b/Mage.Sets/src/mage/cards/a/AuthorOfShadows.java
new file mode 100644
index 00000000000..6ba8b90fba2
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/a/AuthorOfShadows.java
@@ -0,0 +1,96 @@
+package mage.cards.a;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.*;
+import mage.constants.*;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.players.Player;
+import mage.target.TargetCard;
+import mage.target.common.TargetCardInExile;
+import mage.util.CardUtil;
+
+import java.util.Objects;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class AuthorOfShadows extends CardImpl {
+
+    public AuthorOfShadows(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{B}");
+
+        this.subtype.add(SubType.SHADE);
+        this.subtype.add(SubType.WARLOCK);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(3);
+
+        // When Author of Shadows enters the battlefield, exile all cards from all opponents' graveyards. Choose a nonland card exiled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
+        this.addAbility(new EntersBattlefieldTriggeredAbility(new AuthorOfShadowsEffect()));
+    }
+
+    private AuthorOfShadows(final AuthorOfShadows card) {
+        super(card);
+    }
+
+    @Override
+    public AuthorOfShadows copy() {
+        return new AuthorOfShadows(this);
+    }
+}
+
+class AuthorOfShadowsEffect extends OneShotEffect {
+
+    AuthorOfShadowsEffect() {
+        super(Outcome.Benefit);
+        staticText = "exile all cards from all opponents' graveyards. Choose a nonland card exiled this way. " +
+                "You may cast that card for as long as it remains exiled, and you may spend mana " +
+                "as though it were mana of any color to cast that spell";
+    }
+
+    private AuthorOfShadowsEffect(final AuthorOfShadowsEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public AuthorOfShadowsEffect copy() {
+        return new AuthorOfShadowsEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        Cards cards = new CardsImpl();
+        game.getOpponents(source.getControllerId())
+                .stream()
+                .map(game::getPlayer)
+                .filter(Objects::nonNull)
+                .map(Player::getGraveyard)
+                .forEach(cards::addAll);
+        cards.removeIf(Objects::isNull);
+        if (cards.isEmpty()) {
+            return false;
+        }
+        player.moveCards(cards, Zone.EXILED, source, game);
+        cards.retainZone(Zone.EXILED, game);
+        if (cards.isEmpty()) {
+            return false;
+        }
+        TargetCard target = new TargetCardInExile(StaticFilters.FILTER_CARD_A_NON_LAND);
+        target.setNotTarget(true);
+        player.choose(outcome, cards, target, game);
+        Card card = game.getCard(target.getFirstTarget());
+        if (card == null) {
+            return false;
+        }
+        CardUtil.makeCardPlayable(game, source, card, Duration.Custom, true);
+        return true;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/Commander2021Edition.java b/Mage.Sets/src/mage/sets/Commander2021Edition.java
index 68a1a06f1d1..06cf3a9900f 100644
--- a/Mage.Sets/src/mage/sets/Commander2021Edition.java
+++ b/Mage.Sets/src/mage/sets/Commander2021Edition.java
@@ -36,6 +36,7 @@ public final class Commander2021Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Arcane Signet", 234, Rarity.COMMON, mage.cards.a.ArcaneSignet.class));
         cards.add(new SetCardInfo("Archaeomancer's Map", 12, Rarity.RARE, mage.cards.a.ArchaeomancersMap.class));
         cards.add(new SetCardInfo("Audacious Reshapers", 47, Rarity.RARE, mage.cards.a.AudaciousReshapers.class));
+        cards.add(new SetCardInfo("Author of Shadows", 35, Rarity.RARE, mage.cards.a.AuthorOfShadows.class));
         cards.add(new SetCardInfo("Barren Moor", 277, Rarity.UNCOMMON, mage.cards.b.BarrenMoor.class));
         cards.add(new SetCardInfo("Battlefield Forge", 278, Rarity.RARE, mage.cards.b.BattlefieldForge.class));
         cards.add(new SetCardInfo("Beast Within", 186, Rarity.UNCOMMON, mage.cards.b.BeastWithin.class));