Implement Benevolent Unicorn

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

@@ -0,0 +1,94 @@
+
+package mage.cards.b;
+
+import java.util.UUID;
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.constants.Duration;
+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;
+
+/**
+ *
+ * @author LoneFox, Ketsuban
+
+ */
+public final class BenevolentUnicorn extends CardImpl {
+
+    public BenevolentUnicorn(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{1}{W}");
+        this.subtype.add(SubType.UNICORN);
+
+        this.power = new MageInt(1);
+        this.toughness = new MageInt(2);
+
+        // If a spell would deal damage to a permanent or player, it deals that much damage minus 1 to that permanent or player instead.
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new BenevolentUnicornEffect()));
+    }
+
+    public BenevolentUnicorn(final BenevolentUnicorn card) {
+        super(card);
+    }
+
+    @Override
+    public BenevolentUnicorn copy() {
+        return new BenevolentUnicorn(this);
+    }
+}
+
+class BenevolentUnicornEffect extends ReplacementEffectImpl {
+
+    public BenevolentUnicornEffect() {
+        super(Duration.WhileOnBattlefield, Outcome.Benefit);
+        staticText = "If a spell would deal damage to a permanent or player, it deals that much damage minus 1 to that permanent or player instead.";
+    }
+
+    public BenevolentUnicornEffect(final BenevolentUnicornEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public BenevolentUnicornEffect copy() {
+        return new BenevolentUnicornEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return true;
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        event.setAmount(event.getAmount() - 1);
+        return false;
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == EventType.DAMAGE_CREATURE || event.getType() == EventType.DAMAGE_PLANESWALKER || event.getType() == EventType.DAMAGE_PLAYER;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        StackObject stackObject = game.getStack().getStackObject(event.getSourceId());
+        if (stackObject == null) {
+            stackObject = (StackObject) game.getLastKnownInformation(event.getSourceId(), Zone.STACK);
+        }
+        if (stackObject instanceof Spell) {
+            return super.applies(event, source, game);
+        }
+        return false;
+    }
+
+}

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

@@ -45,6 +45,7 @@ public final class Mirage extends ExpansionSet {
         cards.add(new SetCardInfo("Barbed-Back Wurm", 105, Rarity.UNCOMMON, mage.cards.b.BarbedBackWurm.class));
         cards.add(new SetCardInfo("Bay Falcon", 54, Rarity.COMMON, mage.cards.b.BayFalcon.class));
         cards.add(new SetCardInfo("Bazaar of Wonders", 55, Rarity.RARE, mage.cards.b.BazaarOfWonders.class));
+        cards.add(new SetCardInfo("Benevolent Unicorn", 4, Rarity.COMMON, mage.cards.b.BenevolentUnicorn.class));
         cards.add(new SetCardInfo("Benthic Djinn", 257, Rarity.RARE, mage.cards.b.BenthicDjinn.class));
         cards.add(new SetCardInfo("Binding Agony", 106, Rarity.COMMON, mage.cards.b.BindingAgony.class));
         cards.add(new SetCardInfo("Blighted Shaman", 107, Rarity.UNCOMMON, mage.cards.b.BlightedShaman.class));