From 6b200e00e710630dc94ec82725142b1e60b00ef5 Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Mon, 27 May 2019 20:29:58 -0400
Subject: [PATCH] Implemented Valiant Changeling

---
 .../src/mage/cards/v/ValiantChangeling.java   | 101 ++++++++++++++++++
 Mage.Sets/src/mage/sets/ModernHorizons.java   |   1 +
 2 files changed, 102 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/v/ValiantChangeling.java

diff --git a/Mage.Sets/src/mage/cards/v/ValiantChangeling.java b/Mage.Sets/src/mage/cards/v/ValiantChangeling.java
new file mode 100644
index 0000000000..6a4d65c150
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/v/ValiantChangeling.java
@@ -0,0 +1,101 @@
+package mage.cards.v;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.SpellAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.common.cost.CostModificationEffectImpl;
+import mage.abilities.keyword.ChangelingAbility;
+import mage.abilities.keyword.DoubleStrikeAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.util.CardUtil;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class ValiantChangeling extends CardImpl {
+
+    public ValiantChangeling(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{5}{W}{W}");
+
+        this.subtype.add(SubType.SHAPESHIFTER);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(3);
+
+        // This spell costs {1} less to cast for each creature type among creatures you control. This effect can't reduce the amount of mana this spell costs by more than {5}.
+        this.addAbility(new SimpleStaticAbility(Zone.ALL, new ValiantChangelingCostReductionEffect()));
+
+        // Changeling
+        this.addAbility(ChangelingAbility.getInstance());
+
+        // Double strike
+        this.addAbility(DoubleStrikeAbility.getInstance());
+    }
+
+    private ValiantChangeling(final ValiantChangeling card) {
+        super(card);
+    }
+
+    @Override
+    public ValiantChangeling copy() {
+        return new ValiantChangeling(this);
+    }
+}
+
+class ValiantChangelingCostReductionEffect extends CostModificationEffectImpl {
+
+    ValiantChangelingCostReductionEffect() {
+        super(Duration.WhileOnStack, Outcome.Benefit, CostModificationType.REDUCE_COST);
+        staticText = "This spell costs {1} less to cast for each creature type among creatures you control. " +
+                "This effect can't reduce the amount of mana this spell costs by more than {5}.";
+    }
+
+    private ValiantChangelingCostReductionEffect(ValiantChangelingCostReductionEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source, Ability abilityToModify) {
+        Set<SubType> subTypes = new HashSet();
+        int reductionAmount = 0;
+        for (Permanent permanent : game.getBattlefield().getActivePermanents(
+                StaticFilters.FILTER_PERMANENT_CREATURE, source.getControllerId(), source.getSourceId(), game
+        )) {
+            if (permanent.getAbilities().contains(ChangelingAbility.getInstance())
+                    || permanent.isAllCreatureTypes()) {
+                reductionAmount = 5;
+                break;
+            }
+            subTypes.addAll(permanent.getSubtype(game));
+            reductionAmount = subTypes.size();
+            if (reductionAmount > 4) {
+                break;
+            }
+        }
+        CardUtil.reduceCost(abilityToModify, Math.max(reductionAmount, 5));
+        return true;
+    }
+
+    @Override
+    public boolean applies(Ability abilityToModify, Ability source, Game game) {
+        if ((abilityToModify instanceof SpellAbility)
+                && abilityToModify.getSourceId().equals(source.getSourceId())) {
+            return game.getCard(abilityToModify.getSourceId()) != null;
+        }
+        return false;
+    }
+
+    @Override
+    public ValiantChangelingCostReductionEffect copy() {
+        return new ValiantChangelingCostReductionEffect(this);
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/ModernHorizons.java b/Mage.Sets/src/mage/sets/ModernHorizons.java
index 84cb937ecb..cf46108ba4 100644
--- a/Mage.Sets/src/mage/sets/ModernHorizons.java
+++ b/Mage.Sets/src/mage/sets/ModernHorizons.java
@@ -146,6 +146,7 @@ public final class ModernHorizons extends ExpansionSet {
         cards.add(new SetCardInfo("Umezawa's Charm", 111, Rarity.COMMON, mage.cards.u.UmezawasCharm.class));
         cards.add(new SetCardInfo("Undead Augur", 112, Rarity.UNCOMMON, mage.cards.u.UndeadAugur.class));
         cards.add(new SetCardInfo("Urza, Lord High Artificer", 75, Rarity.MYTHIC, mage.cards.u.UrzaLordHighArtificer.class));
+        cards.add(new SetCardInfo("Valiant Changeling", 34, Rarity.UNCOMMON, mage.cards.v.ValiantChangeling.class));
         cards.add(new SetCardInfo("Venomous Changeling", 114, Rarity.COMMON, mage.cards.v.VenomousChangeling.class));
         cards.add(new SetCardInfo("Wall of One Thousand Cuts", 36, Rarity.COMMON, mage.cards.w.WallOfOneThousandCuts.class));
         cards.add(new SetCardInfo("Waterlogged Grove", 249, Rarity.RARE, mage.cards.w.WaterloggedGrove.class));