[ONE] Implement Slobad, Iron Goblin

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

@@ -0,0 +1,148 @@
+package mage.cards.s;
+
+import mage.ConditionalMana;
+import mage.MageInt;
+import mage.MageObject;
+import mage.Mana;
+import mage.abilities.Ability;
+import mage.abilities.condition.Condition;
+import mage.abilities.costs.common.SacrificeTargetCost;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.effects.mana.ManaEffect;
+import mage.abilities.mana.SimpleManaAbility;
+import mage.abilities.mana.builder.ConditionalManaBuilder;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.constants.Zone;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.players.Player;
+import mage.util.CardUtil;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class SlobadIronGoblin extends CardImpl {
+
+    public SlobadIronGoblin(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{R}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.PHYREXIAN);
+        this.subtype.add(SubType.GOBLIN);
+        this.subtype.add(SubType.ARTIFICER);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(3);
+
+        // {T}, Sacrifice an artifact: Add an amount of {R} equal to the sacrificed artifact's mana value. Spend this mana only to cast artifact spells or activate abilities of artifacts.
+        Ability ability = new SimpleManaAbility(Zone.BATTLEFIELD, new SlobadIronGoblinManaEffect(), new TapSourceCost());
+        ability.addCost(new SacrificeTargetCost(StaticFilters.FILTER_CONTROLLED_PERMANENT_ARTIFACT_AN));
+        this.addAbility(ability);
+    }
+
+    private SlobadIronGoblin(final SlobadIronGoblin card) {
+        super(card);
+    }
+
+    @Override
+    public SlobadIronGoblin copy() {
+        return new SlobadIronGoblin(this);
+    }
+}
+
+class SlobadIronGoblinManaEffect extends ManaEffect {
+
+    private final ConditionalManaBuilder manaBuilder = new SlobadIronGoblinManaBuilder();
+
+    SlobadIronGoblinManaEffect() {
+        this.staticText = "Add an amount of {R} equal to the sacrificed artifact's mana value. " +
+                "Spend this mana only to cast artifact spells or activate abilities of artifacts";
+    }
+
+    private SlobadIronGoblinManaEffect(final SlobadIronGoblinManaEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public SlobadIronGoblinManaEffect copy() {
+        return new SlobadIronGoblinManaEffect(this);
+    }
+
+    @Override
+    public List<Mana> getNetMana(Game game, Ability source) {
+        if (game == null) {
+            return new ArrayList<>();
+        }
+        List<Mana> netMana = new ArrayList<>();
+        int cmc = game
+                .getBattlefield()
+                .getActivePermanents(
+                        StaticFilters.FILTER_CONTROLLED_PERMANENT_ARTIFACT,
+                        source.getControllerId(), source, game
+                ).stream()
+                .mapToInt(MageObject::getManaValue)
+                .max()
+                .orElse(-1);
+        if (cmc > 0) {
+            netMana.add(manaBuilder.setMana(Mana.RedMana(cmc), source, game).build());
+        }
+        return netMana;
+    }
+
+    @Override
+    public Mana produceMana(Game game, Ability source) {
+        if (game == null) {
+            return new Mana();
+        }
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller == null) {
+            return new Mana();
+        }
+        int value = CardUtil
+                .castStream(source.getCosts().stream(), SacrificeTargetCost.class)
+                .map(SacrificeTargetCost::getPermanents)
+                .flatMap(Collection::stream)
+                .mapToInt(MageObject::getManaValue)
+                .sum();
+        return manaBuilder.setMana(Mana.RedMana(value), source, game).build();
+    }
+}
+
+class SlobadIronGoblinManaBuilder extends ConditionalManaBuilder {
+
+    @Override
+    public ConditionalMana build(Object... options) {
+        return new SlobadIronGoblinConditionalMana(this.mana);
+    }
+
+    @Override
+    public String getRule() {
+        return "Spend this mana only to cast artifact spells or activate abilities of artifacts";
+    }
+}
+
+class SlobadIronGoblinConditionalMana extends ConditionalMana {
+
+    SlobadIronGoblinConditionalMana(Mana mana) {
+        super(mana);
+        addCondition(SlobadIronGoblinCondition.instance);
+    }
+}
+
+enum SlobadIronGoblinCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        MageObject object = game.getObject(source);
+        return object != null && object.isArtifact(game);
+    }
+}

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

@@ -234,6 +234,7 @@ public final class PhyrexiaAllWillBeOne extends ExpansionSet {
         cards.add(new SetCardInfo("Skrelv's Hive", 34, Rarity.RARE, mage.cards.s.SkrelvsHive.class));
         cards.add(new SetCardInfo("Skyscythe Engulfer", 183, Rarity.COMMON, mage.cards.s.SkyscytheEngulfer.class));
         cards.add(new SetCardInfo("Slaughter Singer", 216, Rarity.UNCOMMON, mage.cards.s.SlaughterSinger.class));
+        cards.add(new SetCardInfo("Slobad, Iron Goblin", 149, Rarity.RARE, mage.cards.s.SlobadIronGoblin.class));
         cards.add(new SetCardInfo("Solphim, Mayhem Dominus", 150, Rarity.MYTHIC, mage.cards.s.SolphimMayhemDominus.class));
         cards.add(new SetCardInfo("Soulless Jailer", 241, Rarity.RARE, mage.cards.s.SoullessJailer.class));
         cards.add(new SetCardInfo("Staff of Compleation", 242, Rarity.MYTHIC, mage.cards.s.StaffOfCompleation.class));

Mage/src/main/java/mage/util/CardUtil.java

@@ -1706,7 +1706,7 @@ public final class CardUtil {
     }
 
     public static <T> Stream<T> castStream(Stream<?> stream, Class<T> clazz) {
-        return stream.filter(clazz::isInstance).map(clazz::cast);
+        return stream.filter(clazz::isInstance).map(clazz::cast).filter(Objects::nonNull);
     }
 
     /**