Implemented Backdraft Hellkite

Mage.Sets/src/mage/cards/b/BackdraftHellkite.java

@@ -0,0 +1,111 @@
+package mage.cards.b;
+
+import mage.MageInt;
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.common.AttacksTriggeredAbility;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.keyword.FlashbackAbility;
+import mage.abilities.keyword.FlyingAbility;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.game.Game;
+import mage.players.Player;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class BackdraftHellkite extends CardImpl {
+
+    public BackdraftHellkite(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{R}{R}");
+
+        this.subtype.add(SubType.DRAGON);
+        this.power = new MageInt(4);
+        this.toughness = new MageInt(4);
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // Whenever Backdraft Hellkite attacks, each instant and sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.
+        this.addAbility(new AttacksTriggeredAbility(new BackdraftHellkiteEffect(), false));
+    }
+
+    private BackdraftHellkite(final BackdraftHellkite card) {
+        super(card);
+    }
+
+    @Override
+    public BackdraftHellkite copy() {
+        return new BackdraftHellkite(this);
+    }
+}
+
+class BackdraftHellkiteEffect extends ContinuousEffectImpl {
+
+    BackdraftHellkiteEffect() {
+        super(Duration.EndOfTurn, Layer.AbilityAddingRemovingEffects_6, SubLayer.NA, Outcome.AddAbility);
+        this.staticText = "each instant and sorcery card in your graveyard gains flashback until end of turn. " +
+                "The flashback cost is equal to its mana cost";
+    }
+
+    private BackdraftHellkiteEffect(final BackdraftHellkiteEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public BackdraftHellkiteEffect copy() {
+        return new BackdraftHellkiteEffect(this);
+    }
+
+    @Override
+    public void init(Ability source, Game game) {
+        super.init(source, game);
+        if (!this.affectedObjectsSet) {
+            return;
+        }
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return;
+        }
+        player.getGraveyard()
+                .stream()
+                .map((cardId) -> game.getCard(cardId))
+                .filter(card -> card.isInstant() || card.isSorcery())
+                .forEachOrdered(card -> affectedObjectList.add(new MageObjectReference(card, game)));
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        player.getGraveyard()
+                .stream()
+                .filter(cardId -> affectedObjectList.contains(new MageObjectReference(cardId, game)))
+                .forEachOrdered(cardId -> {
+                    Card card = game.getCard(cardId);
+                    if (card == null) {
+                        return;
+                    }
+                    FlashbackAbility ability = null;
+                    if (card.isInstant()) {
+                        ability = new FlashbackAbility(card.getManaCost(), TimingRule.INSTANT);
+                    } else if (card.isSorcery()) {
+                        ability = new FlashbackAbility(card.getManaCost(), TimingRule.SORCERY);
+                    }
+                    if (ability == null) {
+                        return;
+                    }
+                    ability.setSourceId(cardId);
+                    ability.setControllerId(card.getOwnerId());
+                    game.getState().addOtherAbility(card, ability);
+                });
+        return true;
+    }
+}

Mage.Sets/src/mage/sets/Commander2019Edition.java

@@ -22,6 +22,7 @@ public final class Commander2019Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Anje Falkenrath", 37, Rarity.MYTHIC, mage.cards.a.AnjeFalkenrath.class));
         cards.add(new SetCardInfo("Anje's Ravager", 22, Rarity.RARE, mage.cards.a.AnjesRavager.class));
         cards.add(new SetCardInfo("Apex Altisaur", 31, Rarity.RARE, mage.cards.a.ApexAltisaur.class));
+        cards.add(new SetCardInfo("Backdraft Hellkite", 23, Rarity.RARE, mage.cards.b.BackdraftHellkite.class));
         cards.add(new SetCardInfo("Bane of the Living", 104, Rarity.RARE, mage.cards.b.BaneOfTheLiving.class));
         cards.add(new SetCardInfo("Chromeshell Crab", 81, Rarity.RARE, mage.cards.c.ChromeshellCrab.class));
         cards.add(new SetCardInfo("Cinder Glade", 236, Rarity.RARE, mage.cards.c.CinderGlade.class));