[EOE] Implement Weftwalking

Mage.Sets/src/mage/cards/m/MidnightClock.java

@@ -1,29 +1,25 @@
 package mage.cards.m;
 
-import mage.abilities.Ability;
 import mage.abilities.TriggeredAbilityImpl;
-import mage.abilities.triggers.BeginningOfUpkeepTriggeredAbility;
 import mage.abilities.common.SimpleActivatedAbility;
 import mage.abilities.costs.mana.ManaCostsImpl;
-import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
-import mage.abilities.effects.OneShotEffect;
 import mage.abilities.effects.common.ExileSourceEffect;
+import mage.abilities.effects.common.ShuffleHandGraveyardIntoLibraryEffect;
 import mage.abilities.effects.common.counter.AddCountersSourceEffect;
 import mage.abilities.mana.BlueManaAbility;
+import mage.abilities.triggers.BeginningOfUpkeepTriggeredAbility;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
-import mage.cards.Cards;
-import mage.cards.CardsImpl;
 import mage.constants.CardType;
-import mage.constants.Outcome;
 import mage.constants.TargetController;
 import mage.constants.Zone;
 import mage.counters.CounterType;
 import mage.game.Game;
 import mage.game.events.GameEvent;
 import mage.game.permanent.Permanent;
-import mage.players.Player;
 
+import java.util.Optional;
 import java.util.UUID;
 
 /**
@@ -64,7 +60,10 @@ public final class MidnightClock extends CardImpl {
 class MidnightClockTriggeredAbility extends TriggeredAbilityImpl {
 
     MidnightClockTriggeredAbility() {
-        super(Zone.ALL, new MidnightClockEffect(), false);
+        super(Zone.ALL, new ShuffleHandGraveyardIntoLibraryEffect(), false);
+        this.addEffect(new DrawCardSourceControllerEffect(7).concatBy(", then"));
+        this.addEffect(new ExileSourceEffect());
+        this.setTriggerPhrase("When the twelfth hour counter is put on {this}, ");
     }
 
     private MidnightClockTriggeredAbility(final MidnightClockTriggeredAbility ability) {
@@ -78,64 +77,24 @@ class MidnightClockTriggeredAbility extends TriggeredAbilityImpl {
 
     @Override
     public boolean checkTrigger(GameEvent event, Game game) {
-        if (event.getTargetId().equals(getSourceId())
+        if (!event.getTargetId().equals(getSourceId()) || !event.getData().equals(CounterType.HOUR.getName())) {
-                && event.getData().equals(CounterType.HOUR.getName())) {
+            return false;
-            int amountAdded = event.getAmount();
-            int hourCounters = amountAdded;
-            Permanent sourcePermanent = game.getPermanent(getSourceId());
-            if (sourcePermanent == null) {
-                sourcePermanent = game.getPermanentEntering(getSourceId());
-            }
-            if (sourcePermanent != null) {
-                hourCounters = sourcePermanent.getCounters(game).getCount(CounterType.HOUR);
-            }
-            return hourCounters - amountAdded < 12
-                    && 12 <= hourCounters;
         }
-        return false;
+        int amountAdded = event.getAmount();
+        Permanent sourcePermanent = Optional
+                .ofNullable(game.getPermanent(getSourceId()))
+                .orElse(game.getPermanentEntering(getSourceId()));
+        int hourCounters;
+        if (sourcePermanent != null) {
+            hourCounters = sourcePermanent.getCounters(game).getCount(CounterType.HOUR);
+        } else {
+            hourCounters = amountAdded;
+        }
+        return hourCounters - amountAdded < 12 && 12 <= hourCounters;
     }
 
     @Override
     public MidnightClockTriggeredAbility copy() {
         return new MidnightClockTriggeredAbility(this);
     }
-
-    @Override
-    public String getRule() {
-        return "When the twelfth hour counter is put on {this}, " +
-                "shuffle your hand and graveyard into your library, " +
-                "then draw seven cards. Exile {this}.";
-    }
-}
-
-class MidnightClockEffect extends OneShotEffect {
-
-    private static final Effect effect = new ExileSourceEffect();
-
-    MidnightClockEffect() {
-        super(Outcome.Benefit);
-    }
-
-    private MidnightClockEffect(final MidnightClockEffect effect) {
-        super(effect);
-    }
-
-    @Override
-    public MidnightClockEffect copy() {
-        return new MidnightClockEffect(this);
-    }
-
-    @Override
-    public boolean apply(Game game, Ability source) {
-        Player player = game.getPlayer(source.getControllerId());
-        if (player == null) {
-            return false;
-        }
-        Cards cards = new CardsImpl(player.getHand());
-        cards.addAll(player.getGraveyard());
-        player.putCardsOnTopOfLibrary(cards, game, source, false);
-        player.shuffleLibrary(source, game);
-        player.drawCards(7, source, game);
-        return effect.apply(game, source);
-    }
 }

Mage.Sets/src/mage/cards/w/Weftwalking.java

@@ -0,0 +1,95 @@
+package mage.cards.w;
+
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.condition.common.CastFromEverywhereSourceCondition;
+import mage.abilities.costs.AlternativeCostSourceAbility;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
+import mage.abilities.effects.common.ShuffleHandGraveyardIntoLibraryEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.players.Player;
+import mage.watchers.common.SpellsCastWatcher;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class Weftwalking extends CardImpl {
+
+    public Weftwalking(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{4}{U}{U}");
+
+        // When this enchantment enters, if you cast it, shuffle your hand and graveyard into your library, then draw seven cards.
+        Ability ability = new EntersBattlefieldTriggeredAbility(new ShuffleHandGraveyardIntoLibraryEffect())
+                .withInterveningIf(CastFromEverywhereSourceCondition.instance);
+        ability.addEffect(new DrawCardSourceControllerEffect(7).concatBy(", then"));
+        this.addAbility(ability);
+
+        // The first spell each player casts during each of their turns may be cast without paying its mana cost.
+        this.addAbility(new SimpleStaticAbility(new WeftwalkingEffect()));
+    }
+
+    private Weftwalking(final Weftwalking card) {
+        super(card);
+    }
+
+    @Override
+    public Weftwalking copy() {
+        return new Weftwalking(this);
+    }
+}
+
+class WeftwalkingEffect extends ContinuousEffectImpl {
+
+    private enum WeftwalkingCondition implements Condition {
+        instance;
+
+        @Override
+        public boolean apply(Game game, Ability source) {
+            return game
+                    .getState()
+                    .getWatcher(SpellsCastWatcher.class)
+                    .getSpellsCastThisTurn(game.getActivePlayerId())
+                    .isEmpty();
+        }
+    }
+
+    private final AlternativeCostSourceAbility alternativeCastingCostAbility;
+
+    WeftwalkingEffect() {
+        super(Duration.WhileOnBattlefield, Layer.RulesEffects, SubLayer.NA, Outcome.PlayForFree);
+        this.alternativeCastingCostAbility = new AlternativeCostSourceAbility(
+                null, WeftwalkingCondition.instance, null, StaticFilters.FILTER_CARD_NON_LAND, true
+        );
+        staticText = "the first spell each player casts during each of their turns may be cast without paying its mana cost";
+    }
+
+    private WeftwalkingEffect(final WeftwalkingEffect effect) {
+        super(effect);
+        this.alternativeCastingCostAbility = effect.alternativeCastingCostAbility;
+    }
+
+    @Override
+    public WeftwalkingEffect copy() {
+        return new WeftwalkingEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(game.getActivePlayerId());
+        if (player == null) {
+            return false;
+        }
+        alternativeCastingCostAbility.setSourceId(source.getSourceId());
+        player.getAlternativeSourceCosts().add(alternativeCastingCostAbility);
+        return true;
+    }
+}

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

@@ -243,6 +243,7 @@ public final class EdgeOfEternities extends ExpansionSet {
         cards.add(new SetCardInfo("Weapons Manufacturing", 168, Rarity.RARE, mage.cards.w.WeaponsManufacturing.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Weapons Manufacturing", 311, Rarity.RARE, mage.cards.w.WeaponsManufacturing.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Weftstalker Ardent", 169, Rarity.UNCOMMON, mage.cards.w.WeftstalkerArdent.class));
+        cards.add(new SetCardInfo("Weftwalking", 86, Rarity.MYTHIC, mage.cards.w.Weftwalking.class));
         cards.add(new SetCardInfo("Wurmwall Sweeper", 249, Rarity.COMMON, mage.cards.w.WurmwallSweeper.class));
         cards.add(new SetCardInfo("Zero Point Ballad", 335, Rarity.RARE, mage.cards.z.ZeroPointBallad.class));
 

Mage/src/main/java/mage/abilities/effects/common/ShuffleHandGraveyardIntoLibraryEffect.java

@@ -0,0 +1,40 @@
+package mage.abilities.effects.common;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.Cards;
+import mage.cards.CardsImpl;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.players.Player;
+
+/**
+ * @author TheElk801
+ */
+public class ShuffleHandGraveyardIntoLibraryEffect extends OneShotEffect {
+
+    public ShuffleHandGraveyardIntoLibraryEffect() {
+        super(Outcome.Discard);
+        this.staticText = "shuffle your hand and graveyard into your library";
+    }
+
+    protected ShuffleHandGraveyardIntoLibraryEffect(final ShuffleHandGraveyardIntoLibraryEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public ShuffleHandGraveyardIntoLibraryEffect copy() {
+        return new ShuffleHandGraveyardIntoLibraryEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        Cards cards = new CardsImpl(player.getHand());
+        cards.addAll(player.getGraveyard());
+        return player.shuffleCardsToLibrary(cards, game, source);
+    }
+}