[C21] Implemented Study Hall

Mage.Sets/src/mage/cards/g/GilanraCallerOfWirewood.java

@@ -18,6 +18,7 @@ import mage.game.Game;
 import mage.game.events.GameEvent;
 import mage.game.permanent.Permanent;
 import mage.game.stack.Spell;
+import mage.players.ManaPoolItem;
 import mage.players.Player;
 
 import java.util.UUID;
@@ -81,12 +82,11 @@ class GilanraCallerOfWirewoodTriggeredAbility extends DelayedTriggeredAbility {
         if (!getSourceId().equals(event.getSourceId())) {
             return false;
         }
-        Permanent sourcePermanent = game.getPermanentOrLKIBattlefield(getSourceId());
+        Permanent sourcePermanent = getSourcePermanentOrLKI(game);
         if (sourcePermanent == null
                 || sourcePermanent
                 .getAbilities(game)
                 .stream()
-                .filter(GreenManaAbility.class::isInstance)
                 .map(Ability::getOriginalId)
                 .map(UUID::toString)
                 .noneMatch(event.getData()::equals)) {
@@ -101,15 +101,16 @@ class GilanraCallerOfWirewoodTriggeredAbility extends DelayedTriggeredAbility {
         if (super.isInactive(game)) {
             return true;
         }
-
         // must remove effect on empty mana pool to fix accumulate bug
-        Player player = game.getPlayer(this.getControllerId());
-        if (player == null) {
-            return true;
-        }
-
         // if no mana in pool then it can be discarded
-        return player.getManaPool().getManaItems().stream().noneMatch(m -> m.getSourceId().equals(getSourceId()));
+        Player player = game.getPlayer(this.getControllerId());
+        return player == null
+                || player
+                .getManaPool()
+                .getManaItems()
+                .stream()
+                .map(ManaPoolItem::getSourceId)
+                .noneMatch(getSourceId()::equals);
     }
 
     @Override

Mage.Sets/src/mage/cards/s/StudyHall.java

@@ -0,0 +1,125 @@
+package mage.cards.s;
+
+import mage.abilities.Ability;
+import mage.abilities.DelayedTriggeredAbility;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.common.CreateDelayedTriggeredAbilityEffect;
+import mage.abilities.effects.keyword.ScryEffect;
+import mage.abilities.mana.AnyColorManaAbility;
+import mage.abilities.mana.ColorlessManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.game.stack.Spell;
+import mage.players.ManaPoolItem;
+import mage.players.Player;
+import mage.watchers.common.CommanderPlaysCountWatcher;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class StudyHall extends CardImpl {
+
+    public StudyHall(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.LAND}, "");
+
+        // {T}: Add {C}.
+        this.addAbility(new ColorlessManaAbility());
+
+        // {1}, {T}: Add one mana of any color. When you spend this mana to cast your commander, scry X, where X is the number of times it's been cast from the command zone this game.
+        AnyColorManaAbility ability = new AnyColorManaAbility(new GenericManaCost(1));
+        ability.addCost(new TapSourceCost());
+        ability.addEffect(new CreateDelayedTriggeredAbilityEffect(new StudyHallTriggeredAbility()));
+        ability.setUndoPossible(false);
+        this.addAbility(ability);
+    }
+
+    private StudyHall(final StudyHall card) {
+        super(card);
+    }
+
+    @Override
+    public StudyHall copy() {
+        return new StudyHall(this);
+    }
+}
+
+class StudyHallTriggeredAbility extends DelayedTriggeredAbility {
+
+    StudyHallTriggeredAbility() {
+        super(null, Duration.Custom, true, false);
+    }
+
+    private StudyHallTriggeredAbility(final StudyHallTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public StudyHallTriggeredAbility copy() {
+        return new StudyHallTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.MANA_PAID;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (!getSourceId().equals(event.getSourceId())) {
+            return false;
+        }
+        Permanent sourcePermanent = getSourcePermanentOrLKI(game);
+        if (sourcePermanent == null
+                || sourcePermanent
+                .getAbilities(game)
+                .stream()
+                .map(Ability::getOriginalId)
+                .map(UUID::toString)
+                .noneMatch(event.getData()::equals)) {
+            return false;
+        }
+        Player player = game.getPlayer(getControllerId());
+        Spell spell = game.getStack().getSpell(event.getTargetId());
+        CommanderPlaysCountWatcher watcher = game.getState().getWatcher(CommanderPlaysCountWatcher.class);
+        if (player == null
+                || spell == null
+                || watcher == null
+                || !game.isCommanderObject(player, spell)) {
+            return false;
+        }
+        getEffects().clear();
+        addEffect(new ScryEffect(watcher.getPlaysCount(spell.getMainCard().getId())));
+        return true;
+    }
+
+    @Override
+    public boolean isInactive(Game game) {
+        if (super.isInactive(game)) {
+            return true;
+        }
+        // must remove effect on empty mana pool to fix accumulate bug
+        // if no mana in pool then it can be discarded
+        Player player = game.getPlayer(this.getControllerId());
+        return player == null
+                || player
+                .getManaPool()
+                .getManaItems()
+                .stream()
+                .map(ManaPoolItem::getSourceId)
+                .noneMatch(getSourceId()::equals);
+    }
+
+    @Override
+    public String getRule() {
+        return "When you spend this mana to cast your commander, scry X, " +
+                "where X is the number of times it's been cast from the command zone this game.";
+    }
+}

Mage.Sets/src/mage/sets/Commander2021Edition.java

@@ -292,6 +292,7 @@ public final class Commander2021Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Steel Hellkite", 266, Rarity.RARE, mage.cards.s.SteelHellkite.class));
         cards.add(new SetCardInfo("Steel Overseer", 267, Rarity.RARE, mage.cards.s.SteelOverseer.class));
         cards.add(new SetCardInfo("Stinging Study", 44, Rarity.RARE, mage.cards.s.StingingStudy.class));
+        cards.add(new SetCardInfo("Study Hall", 80, Rarity.COMMON, mage.cards.s.StudyHall.class));
         cards.add(new SetCardInfo("Suffer the Past", 155, Rarity.UNCOMMON, mage.cards.s.SufferThePast.class));
         cards.add(new SetCardInfo("Sun Droplet", 268, Rarity.UNCOMMON, mage.cards.s.SunDroplet.class));
         cards.add(new SetCardInfo("Sun Titan", 106, Rarity.MYTHIC, mage.cards.s.SunTitan.class));