Implemented Leyline of Combustion

Mage.Sets/src/mage/cards/l/LeylineOfCombustion.java

@@ -0,0 +1,100 @@
+package mage.cards.l;
+
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.DamageTargetEffect;
+import mage.abilities.keyword.LeylineAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.game.stack.StackObject;
+import mage.target.targetpointer.FixedTarget;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class LeylineOfCombustion extends CardImpl {
+
+    public LeylineOfCombustion(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{2}{R}{R}");
+
+        // If Leyline of Combustion is in your opening hand, you may begin the game with it on the battlefield.
+        this.addAbility(LeylineAbility.getInstance());
+
+        // Whenever you and/or at least one permanent you control becomes the target of a spell or ability an opponent controls, Leyline of Combustion deals 2 damage to that player.
+        this.addAbility(new LeylineOfCombustionTriggeredAbility());
+    }
+
+    private LeylineOfCombustion(final LeylineOfCombustion card) {
+        super(card);
+    }
+
+    @Override
+    public LeylineOfCombustion copy() {
+        return new LeylineOfCombustion(this);
+    }
+}
+
+class LeylineOfCombustionTriggeredAbility extends TriggeredAbilityImpl {
+
+    LeylineOfCombustionTriggeredAbility() {
+        super(Zone.BATTLEFIELD, null);
+    }
+
+    private LeylineOfCombustionTriggeredAbility(final LeylineOfCombustionTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public LeylineOfCombustionTriggeredAbility copy() {
+        return new LeylineOfCombustionTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.TARGETED;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        StackObject sourceObject = game.getStack().getStackObject(event.getSourceId());
+        if (sourceObject == null) {
+            return false;
+        }
+        if (sourceObject
+                .getStackAbility()
+                .getTargets()
+                .stream()
+                .noneMatch(target -> target
+                        .getTargets()
+                        .stream()
+                        .anyMatch(targetId -> {
+                            if (this.controllerId.equals(targetId)) {
+                                return true;
+                            }
+                            Permanent permanent = game.getPermanent(targetId);
+                            return permanent != null && permanent.getControllerId().equals(this.controllerId);
+                        })
+                )) {
+            return false;
+        }
+        this.getEffects().clear();
+        Effect effect = new DamageTargetEffect(2);
+        effect.setTargetPointer(new FixedTarget(sourceObject.getControllerId(), game));
+        this.addEffect(effect);
+        return true;
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever you and/or at least one permanent you control " +
+                "becomes the target of a spell or ability an opponent controls, " +
+                "{this} deals 2 damage to that player.";
+    }
+}

Mage.Sets/src/mage/sets/CoreSet2020.java

@@ -122,6 +122,7 @@ public final class CoreSet2020 extends ExpansionSet {
         cards.add(new SetCardInfo("Legion's End", 106, Rarity.RARE, mage.cards.l.LegionsEnd.class));
         cards.add(new SetCardInfo("Leyline of Abundance", 179, Rarity.RARE, mage.cards.l.LeylineOfAbundance.class));
         cards.add(new SetCardInfo("Leyline of Anticipation", 64, Rarity.RARE, mage.cards.l.LeylineOfAnticipation.class));
+        cards.add(new SetCardInfo("Leyline of Combustion", 148, Rarity.RARE, mage.cards.l.LeylineOfCombustion.class));
         cards.add(new SetCardInfo("Leyline of Sanctity", 26, Rarity.RARE, mage.cards.l.LeylineOfSanctity.class));
         cards.add(new SetCardInfo("Leyline of the Void", 107, Rarity.RARE, mage.cards.l.LeylineOfTheVoid.class));
         cards.add(new SetCardInfo("Loaming Shaman", 180, Rarity.UNCOMMON, mage.cards.l.LoamingShaman.class));