[MKM] Implement Niv-Mizzet, Guildpact (#11787)

* [MKM] Implement Niv-Mizzet, Guildpact

* Address comments

Mage.Sets/src/mage/cards/n/NivMizzetGuildpact.java

@@ -0,0 +1,153 @@
+package mage.cards.n;
+
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+import mage.MageInt;
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.common.DealsCombatDamageToAPlayerTriggeredAbility;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.DamageTargetEffect;
+import mage.abilities.effects.common.DrawCardTargetEffect;
+import mage.abilities.effects.common.GainLifeEffect;
+import mage.abilities.hint.Hint;
+import mage.abilities.keyword.HexproofFromMulticoloredAbility;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.abilities.keyword.FlyingAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPlayer;
+import mage.target.common.TargetAnyTarget;
+import mage.target.targetpointer.SecondTargetPointer;
+
+/**
+ *
+ * @author DominionSpy
+ */
+public final class NivMizzetGuildpact extends CardImpl {
+
+    public NivMizzetGuildpact(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{W}{U}{B}{R}{G}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.DRAGON);
+        this.subtype.add(SubType.AVATAR);
+        this.power = new MageInt(6);
+        this.toughness = new MageInt(6);
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // Hexproof from multicolored
+        this.addAbility(HexproofFromMulticoloredAbility.getInstance());
+
+        // Whenever Niv-Mizzet, Guildpact deals combat damage to a player,
+        // it deals X damage to any target, target player draws X cards, and you gain X life,
+        // where X is the number of different color pairs among permanents you control that are exactly two colors.
+        Ability ability = new DealsCombatDamageToAPlayerTriggeredAbility(
+                new DamageTargetEffect(NivMizzetGuildpactCount.instance)
+                        .setText("it deals X damage to any target"), false);
+        ability.addTarget(new TargetAnyTarget());
+        ability.addEffect(new DrawCardTargetEffect(NivMizzetGuildpactCount.instance)
+                .setTargetPointer(new SecondTargetPointer())
+                .setText(", target player draws X cards"));
+        ability.addTarget(new TargetPlayer());
+        ability.addEffect(new GainLifeEffect(NivMizzetGuildpactCount.instance)
+                .setText(", and you gain X life, where X is the number of different color pairs " +
+                        "among permanents you control that are exactly two colors."));
+        ability.addHint(NivMizzetGuildpactHint.instance);
+        this.addAbility(ability);
+    }
+
+    private NivMizzetGuildpact(final NivMizzetGuildpact card) {
+        super(card);
+    }
+
+    @Override
+    public NivMizzetGuildpact copy() {
+        return new NivMizzetGuildpact(this);
+    }
+}
+
+enum NivMizzetGuildpactCount implements DynamicValue {
+    instance;
+
+    @Override
+    public NivMizzetGuildpactCount copy() {
+        return instance;
+    }
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        return (int) game.getBattlefield()
+                .getAllActivePermanents(
+                        StaticFilters.FILTER_CONTROLLED_PERMANENT,
+                        sourceAbility.getControllerId(), game)
+                .stream()
+                .map(Permanent::getColor)
+                .filter(color -> color.getColorCount() == 2)
+                .distinct()
+                .count();
+    }
+
+    @Override
+    public String toString() {
+        return "X";
+    }
+
+    @Override
+    public String getMessage() {
+        return "the number of different color pairs among permanents you control that are exactly two colors";
+    }
+}
+
+enum NivMizzetGuildpactHint implements Hint {
+    instance;
+
+    @Override
+    public NivMizzetGuildpactHint copy() {
+        return instance;
+    }
+
+    @Override
+    public String getText(Game game, Ability ability) {
+        Player controller = game.getPlayer(ability.getControllerId());
+        if (controller == null) {
+            return null;
+        }
+
+        String hintText = "Color pairs you control: ";
+
+        Set<ObjectColor> pairs = game.getBattlefield()
+                .getAllActivePermanents(
+                        StaticFilters.FILTER_CONTROLLED_PERMANENT,
+                        ability.getControllerId(), game)
+                .stream()
+                .map(Permanent::getColor)
+                .filter(color -> color.getColorCount() == 2)
+                .collect(Collectors.toSet());
+
+        if (pairs.size() == 0) {
+            hintText += "0 (None)";
+        } else {
+            hintText += pairs.size() + " (" +
+                    pairs
+                            .stream()
+                            .map(Object::toString)
+                            .sorted()
+                            .map(string -> "{" + string.charAt(0) + "}{" + string.charAt(1) + "}")
+                            .collect(Collectors.joining(", ")) + ")";
+        }
+
+        return hintText;
+    }
+}

Mage.Sets/src/mage/sets/MurdersAtKarlovManor.java

@@ -167,6 +167,7 @@ public final class MurdersAtKarlovManor extends ExpansionSet {
         cards.add(new SetCardInfo("Neighborhood Guardian", 26, Rarity.UNCOMMON, mage.cards.n.NeighborhoodGuardian.class));
         cards.add(new SetCardInfo("Nervous Gardener", 169, Rarity.COMMON, mage.cards.n.NervousGardener.class));
         cards.add(new SetCardInfo("Nightdrinker Moroii", 96, Rarity.UNCOMMON, mage.cards.n.NightdrinkerMoroii.class));
+        cards.add(new SetCardInfo("Niv-Mizzet, Guildpact", 220, Rarity.RARE, mage.cards.n.NivMizzetGuildpact.class));
         cards.add(new SetCardInfo("No More Lies", 221, Rarity.UNCOMMON, mage.cards.n.NoMoreLies.class));
         cards.add(new SetCardInfo("No Witnesses", 27, Rarity.RARE, mage.cards.n.NoWitnesses.class));
         cards.add(new SetCardInfo("Not on My Watch", 28, Rarity.UNCOMMON, mage.cards.n.NotOnMyWatch.class));

Mage/src/main/java/mage/abilities/keyword/HexproofFromMulticoloredAbility.java

@@ -0,0 +1,47 @@
+package mage.abilities.keyword;
+
+import java.io.ObjectStreamException;
+
+import mage.MageObject;
+import mage.game.Game;
+
+public class HexproofFromMulticoloredAbility extends HexproofBaseAbility {
+
+    private static final HexproofFromMulticoloredAbility instance;
+
+    static {
+        instance = new HexproofFromMulticoloredAbility();
+    }
+
+    private Object readResolve() throws ObjectStreamException {
+        return instance;
+    }
+
+    public static HexproofFromMulticoloredAbility getInstance() {
+        return instance;
+    }
+
+    private HexproofFromMulticoloredAbility() {
+        super();
+    }
+
+    @Override
+    public HexproofFromMulticoloredAbility copy() {
+        return instance;
+    }
+
+    @Override
+    public boolean checkObject(MageObject source, Game game) {
+        return source.getColor().isMulticolored();
+    }
+
+    @Override
+    public String getRule() {
+        return "hexproof from multicolored <i>(This creature can't be the target of multicolored spells or abilities your opponents control.)</i>";
+    }
+
+    @Override
+    public String getCardIconHint(Game game) {
+        return "hexproof from multicolored";
+    }
+}