Implemented Echo Storm

Mage.Sets/src/mage/cards/e/EchoStorm.java

@@ -0,0 +1,36 @@
+package mage.cards.e;
+
+import java.util.UUID;
+import mage.abilities.effects.common.CreateTokenCopyTargetEffect;
+import mage.abilities.keyword.CommanderStormAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.target.common.TargetArtifactPermanent;
+
+/**
+ *
+ * @author TheElk801
+ */
+public final class EchoStorm extends CardImpl {
+
+    public EchoStorm(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{3}{U}{U}");
+
+        // When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies.
+        this.addAbility(new CommanderStormAbility());
+
+        // Create a token that's a copy of target artifact.
+        this.getSpellAbility().addEffect(new CreateTokenCopyTargetEffect());
+        this.getSpellAbility().addTarget(new TargetArtifactPermanent());
+    }
+
+    public EchoStorm(final EchoStorm card) {
+        super(card);
+    }
+
+    @Override
+    public EchoStorm copy() {
+        return new EchoStorm(this);
+    }
+}

Mage.Sets/src/mage/sets/Commander2018.java

@@ -27,6 +27,7 @@ public final class Commander2018 extends ExpansionSet {
         cards.add(new SetCardInfo("Centaur Vinecrasher", 135, Rarity.RARE, mage.cards.c.CentaurVinecrasher.class));
         cards.add(new SetCardInfo("Chain Reaction", 121, Rarity.RARE, mage.cards.c.ChainReaction.class));
         cards.add(new SetCardInfo("Chaos Warp", 122, Rarity.RARE, mage.cards.c.ChaosWarp.class));
+        cards.add(new SetCardInfo("Echo Storm", 7, Rarity.RARE, mage.cards.e.EchoStorm.class));
         cards.add(new SetCardInfo("Eidolon of Blossoms", 140, Rarity.RARE, mage.cards.e.EidolonOfBlossoms.class));
         cards.add(new SetCardInfo("Enchanter's Bane", 21, Rarity.RARE, mage.cards.e.EnchantersBane.class));
         cards.add(new SetCardInfo("Explosive Vegetation", 144, Rarity.UNCOMMON, mage.cards.e.ExplosiveVegetation.class));

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

@@ -0,0 +1,107 @@
+package mage.abilities.keyword;
+
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.GameEvent.EventType;
+import mage.game.stack.Spell;
+import mage.game.stack.StackObject;
+import mage.players.Player;
+
+/**
+ *
+ * @author Plopman
+ */
+public class CommanderStormAbility extends TriggeredAbilityImpl {
+
+    public CommanderStormAbility() {
+        super(Zone.STACK, new CommanderStormEffect());
+        this.ruleAtTheTop = true;
+    }
+
+    private CommanderStormAbility(final CommanderStormAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public CommanderStormAbility copy() {
+        return new CommanderStormAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == EventType.SPELL_CAST;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (event.getSourceId().equals(getSourceId())) {
+            StackObject spell = game.getStack().getStackObject(getSourceId());
+            if (spell instanceof Spell) {
+                for (Effect effect : this.getEffects()) {
+                    effect.setValue("StormSpell", spell);
+                    effect.setValue("StormSpellRef", new MageObjectReference(spell.getId(), game));
+                }
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public String getRule() {
+        return "When you cast this spell, copy it for each time you've "
+                + "cast your commander from the command zone this game. "
+                + "You may choose new targets for the copies.";
+    }
+}
+
+class CommanderStormEffect extends OneShotEffect {
+
+    public CommanderStormEffect() {
+        super(Outcome.Copy);
+    }
+
+    public CommanderStormEffect(final CommanderStormEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        MageObjectReference spellRef = (MageObjectReference) this.getValue("StormSpellRef");
+        if (spellRef == null) {
+            return false;
+        }
+        int stormCount = 0;
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        stormCount = player.getCommandersIds().stream().map(
+                (commanderId) -> (Integer) game.getState().getValue(commanderId + "_castCount")
+        ).map((castCount) -> castCount).reduce(stormCount, Integer::sum);
+        if (stormCount == 0) {
+            return true;
+        }
+        Spell spell = (Spell) this.getValue("StormSpell");
+        if (spell == null) {
+            return false;
+        }
+        game.informPlayers(spell.getLogName() + " will be copied " + stormCount + " time" + (stormCount > 1 ? "s" : ""));
+        for (int i = 0; i < stormCount; i++) {
+            spell.createCopyOnStack(game, source, source.getControllerId(), true);
+        }
+        return true;
+    }
+
+    @Override
+    public CommanderStormEffect copy() {
+        return new CommanderStormEffect(this);
+    }
+}