MOM: Added card "Omnath, Locus of All" and its abilities and effects (#10029)

* MOM: Added card "Omnath, Locus of All" and its abilities and effects

* fixed rule text

* added art variant

* test

---------

Co-authored-by: Daniel Eberhard <daniel.h.e@gmx.de>
Co-authored-by: Evan Kranzler <theelk801@gmail.com>

Mage.Sets/src/mage/cards/o/OmnathLocusOfAll.java

@@ -0,0 +1,139 @@
+package mage.cards.o;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfPreCombatMainTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.mana.AddManaInAnyCombinationEffect;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.cards.CardsImpl;
+import mage.constants.*;
+import mage.game.Game;
+import mage.players.Player;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+public class OmnathLocusOfAll extends CardImpl {
+    public OmnathLocusOfAll(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{W}{U}{B/P}{R}{G}");
+        this.addSuperType(SuperType.LEGENDARY);
+        this.addSubType(SubType.PHYREXIAN);
+        this.addSubType(SubType.ELEMENTAL);
+        this.power = new MageInt(4);
+        this.toughness = new MageInt(4);
+
+        //If you would lose unspent mana, that mana becomes black instead.
+        this.addAbility(new SimpleStaticAbility(new OmnathLocusOfAllManaEffect()));
+
+        //At the beginning of your precombat main phase, look at the top card of your library. You may reveal that card
+        //if it has three or more colored mana symbols in its mana cost. If you do, add three mana in any combination of
+        //colors and put it into your hand. If you don’t reveal it, put it into your hand.
+        this.addAbility(new BeginningOfPreCombatMainTriggeredAbility(
+                new OmnathLocusOfAllCardEffect(), TargetController.YOU, false
+        ));
+    }
+
+    private OmnathLocusOfAll(final OmnathLocusOfAll card) {
+        super(card);
+    }
+
+    @Override
+    public OmnathLocusOfAll copy() {
+        return new OmnathLocusOfAll(this);
+    }
+}
+
+class OmnathLocusOfAllManaEffect extends ContinuousEffectImpl {
+
+    OmnathLocusOfAllManaEffect() {
+        super(Duration.WhileOnBattlefield, Layer.RulesEffects, SubLayer.NA, Outcome.Benefit);
+        staticText = "if you would lose unspent mana, that mana becomes black instead";
+    }
+
+    private OmnathLocusOfAllManaEffect(final OmnathLocusOfAllManaEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public OmnathLocusOfAllManaEffect copy() {
+        return new OmnathLocusOfAllManaEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player != null) {
+            player.getManaPool().setManaBecomesBlack(true);
+        }
+        return true;
+    }
+}
+
+class OmnathLocusOfAllCardEffect extends OneShotEffect {
+    public OmnathLocusOfAllCardEffect() {
+        super(Outcome.Benefit);
+        this.staticText = "look at the top card of your library. You may reveal that card if it has three or more " +
+                "colored mana symbols in its mana cost. If you do, add three mana in any combination of colors and " +
+                "put it into your hand. If you don't reveal it, put it into your hand.";
+    }
+
+    public OmnathLocusOfAllCardEffect(final OmnathLocusOfAllCardEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public OmnathLocusOfAllCardEffect copy() {
+        return new OmnathLocusOfAllCardEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        Card card = player.getLibrary().getFromTop(game);
+        if (card == null) {
+            return false;
+        }
+        player.lookAtCards(null, card, game);
+        int amountOfDifferentManaColors = 0;
+        List<ColoredManaSymbol> manaList = new ArrayList<>();
+        if (card.getManaCost().containsColor(ColoredManaSymbol.W)) {
+            amountOfDifferentManaColors++;
+            manaList.add(ColoredManaSymbol.W);
+        }
+        if (card.getManaCost().containsColor(ColoredManaSymbol.U)) {
+            amountOfDifferentManaColors++;
+            manaList.add(ColoredManaSymbol.U);
+        }
+        if (card.getManaCost().containsColor(ColoredManaSymbol.B)) {
+            amountOfDifferentManaColors++;
+            manaList.add(ColoredManaSymbol.B);
+        }
+        if (card.getManaCost().containsColor(ColoredManaSymbol.R)) {
+            amountOfDifferentManaColors++;
+            manaList.add(ColoredManaSymbol.R);
+        }
+        if (card.getManaCost().containsColor(ColoredManaSymbol.G)) {
+            amountOfDifferentManaColors++;
+            manaList.add(ColoredManaSymbol.G);
+        }
+        if (amountOfDifferentManaColors > 2) {
+            if (!player.chooseUse(outcome, "Reveal " + card.getName() + '?', source, game)) {
+                player.moveCards(card, Zone.HAND, source, game);
+                return true;
+            }
+            player.revealCards(source, new CardsImpl(card), game);
+            new AddManaInAnyCombinationEffect(3, manaList.toArray(new ColoredManaSymbol[0])).apply(game, source);
+        }
+        player.moveCards(card, Zone.HAND, source, game);
+        return true;
+    }
+}

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

@@ -179,6 +179,7 @@ public final class MarchOfTheMachine extends ExpansionSet {
         cards.add(new SetCardInfo("Jin-Gitaxias", 65, Rarity.MYTHIC, mage.cards.j.JinGitaxias.class));
         cards.add(new SetCardInfo("Joyful Stormsculptor", 243, Rarity.UNCOMMON, mage.cards.j.JoyfulStormsculptor.class));
         cards.add(new SetCardInfo("Jungle Hollow", 270, Rarity.COMMON, mage.cards.j.JungleHollow.class));
+        cards.add(new SetCardInfo("Omnath, Locus of All", 249, Rarity.RARE, mage.cards.o.OmnathLocusOfAll.class));
         cards.add(new SetCardInfo("Moment of Truth", 67, Rarity.COMMON, mage.cards.m.MomentOfTruth.class));
         cards.add(new SetCardInfo("Kami of Whispered Hopes", 196, Rarity.UNCOMMON, mage.cards.k.KamiOfWhisperedHopes.class));
         cards.add(new SetCardInfo("Karsus Depthguard", 150, Rarity.COMMON, mage.cards.k.KarsusDepthguard.class));

Mage/src/main/java/mage/players/ManaPool.java

@@ -38,6 +38,7 @@ public class ManaPool implements Serializable {
     private final List<ManaPoolItem> poolBookmark = new ArrayList<>(); // mana pool bookmark for rollback purposes
 
     private final Set<ManaType> doNotEmptyManaTypes = new HashSet<>();
+    private boolean manaBecomesBlack = false;
     private boolean manaBecomesColorless = false;
 
     private static final class ConditionalManaInfo {
@@ -71,6 +72,7 @@ public class ManaPool implements Serializable {
             poolBookmark.add(item.copy());
         }
         this.doNotEmptyManaTypes.addAll(pool.doNotEmptyManaTypes);
+        this.manaBecomesBlack = pool.manaBecomesBlack;
         this.manaBecomesColorless = pool.manaBecomesColorless;
     }
 
@@ -225,6 +227,7 @@ public class ManaPool implements Serializable {
 
     public void clearEmptyManaPoolRules() {
         doNotEmptyManaTypes.clear();
+        this.manaBecomesBlack = false;
         this.manaBecomesColorless = false;
     }
 
@@ -232,6 +235,14 @@ public class ManaPool implements Serializable {
         doNotEmptyManaTypes.add(manaType);
     }
 
+    public void setManaBecomesBlack(boolean manaBecomesBlack) {
+        this.manaBecomesBlack = manaBecomesBlack;
+    }
+
+    public boolean isManaBecomesBlack() {
+        return manaBecomesBlack;
+    }
+
     public void setManaBecomesColorless(boolean manaBecomesColorless) {
         this.manaBecomesColorless = manaBecomesColorless;
     }
@@ -274,15 +285,21 @@ public class ManaPool implements Serializable {
                 && game.getTurnPhaseType() != TurnPhase.END) {
             return 0;
         }
-        if (!manaBecomesColorless) {
+        if (manaBecomesBlack) {
             int amount = toEmpty.get(manaType);
             toEmpty.clear(manaType);
-            return amount;
+            toEmpty.add(ManaType.BLACK, amount);
+            return 0;
+        }
+        if (manaBecomesColorless) {
+            int amount = toEmpty.get(manaType);
+            toEmpty.clear(manaType);
+            toEmpty.add(ManaType.COLORLESS, amount);
+            return 0;
         }
         int amount = toEmpty.get(manaType);
         toEmpty.clear(manaType);
-        toEmpty.add(ManaType.COLORLESS, amount);
+        return amount;
-        return 0;
     }
 
     public Mana getMana() {