From 322695959ac5fb26a179c5ae2b3841a1e04653b0 Mon Sep 17 00:00:00 2001
From: jmharmon <37360760+jmharmon@users.noreply.github.com>
Date: Thu, 10 Jan 2019 14:14:42 -0800
Subject: [PATCH] Implement Glaciers (#5485)

* Implement Glaciers

* Implement Glaciers

* Update Glaciers.java

* Update Glaciers.java
---
 Mage.Sets/src/mage/cards/g/Glaciers.java | 104 +++++++++++++++++++++++
 Mage.Sets/src/mage/sets/IceAge.java      |   1 +
 2 files changed, 105 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/g/Glaciers.java

diff --git a/Mage.Sets/src/mage/cards/g/Glaciers.java b/Mage.Sets/src/mage/cards/g/Glaciers.java
new file mode 100644
index 0000000000..d0c6fa2be8
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/g/Glaciers.java
@@ -0,0 +1,104 @@
+package mage.cards.g;
+
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfUpkeepTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.ContinuousEffect;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.SacrificeSourceUnlessPaysEffect;
+import mage.abilities.mana.WhiteManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.common.FilterLandPermanent;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+import java.util.List;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+/**
+ *
+ * @author jmharmon
+ */
+
+public final class Glaciers extends CardImpl {
+
+    private  static final FilterLandPermanent filter = new FilterLandPermanent(SubType.MOUNTAIN, "Mountains");
+
+    public Glaciers(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{2}{W}{U}");
+
+        // At the beginning of your upkeep, sacrifice Glaciers unless you pay {W}{U}.
+        this.addAbility(new BeginningOfUpkeepTriggeredAbility(new SacrificeSourceUnlessPaysEffect(new ManaCostsImpl("{W}{U}")), TargetController.YOU, false));
+
+        // All Mountains are Plains.
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new GlaciersEffect()));
+    }
+
+    public Glaciers(final Glaciers card) {
+        super(card);
+    }
+
+    @Override
+    public Glaciers copy() {
+        return new Glaciers(this);
+    }
+
+    static class GlaciersEffect extends ContinuousEffectImpl {
+
+        GlaciersEffect() {
+            super(Duration.WhileOnBattlefield, Outcome.Detriment);
+            this.staticText = "All Mountains are Plains";
+        }
+
+        GlaciersEffect(final GlaciersEffect effect) {
+            super(effect);
+        }
+
+        @Override
+        public boolean apply(Game game, Ability source) {
+            return false;
+        }
+
+        @Override
+        public GlaciersEffect copy() {
+            return new GlaciersEffect(this);
+        }
+
+        @Override
+        public boolean apply(Layer layer, SubLayer sublayer, Ability source, Game game) {
+            for (Permanent land : game.getBattlefield().getActivePermanents(filter, source.getControllerId(), game)) {
+                switch (layer) {
+                    case AbilityAddingRemovingEffects_6:
+                        land.removeAllAbilities(source.getSourceId(), game);
+                        land.addAbility(new WhiteManaAbility(), source.getSourceId(), game);
+                        break;
+                    case TypeChangingEffects_4:
+                        land.getSubtype(game).clear();
+                        land.getSubtype(game).add(SubType.PLAINS);
+                        break;
+                }
+            }
+            return true;
+        }
+
+        @Override
+        public boolean hasLayer(Layer layer) {
+            return layer == Layer.AbilityAddingRemovingEffects_6 || layer == Layer.TypeChangingEffects_4;
+        }
+
+        @Override
+        public Set<UUID> isDependentTo(List<ContinuousEffect> allEffectsInLayer) {
+            return allEffectsInLayer
+                    .stream()
+                    .filter(effect->effect.getDependencyTypes().contains(DependencyType.BecomeMountain))
+                    .map(Effect::getId)
+                    .collect(Collectors.toSet());
+        }
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/IceAge.java b/Mage.Sets/src/mage/sets/IceAge.java
index a7582ffa45..0e24e6143c 100644
--- a/Mage.Sets/src/mage/sets/IceAge.java
+++ b/Mage.Sets/src/mage/sets/IceAge.java
@@ -138,6 +138,7 @@ public final class IceAge extends ExpansionSet {
         cards.add(new SetCardInfo("Glacial Chasm", 353, Rarity.UNCOMMON, mage.cards.g.GlacialChasm.class));
         cards.add(new SetCardInfo("Glacial Crevasses", 187, Rarity.RARE, mage.cards.g.GlacialCrevasses.class));
         cards.add(new SetCardInfo("Glacial Wall", 71, Rarity.UNCOMMON, mage.cards.g.GlacialWall.class));
+        cards.add(new SetCardInfo("Glaciers", 294, Rarity.RARE, mage.cards.g.Glaciers.class));
         cards.add(new SetCardInfo("Goblin Lyre", 319, Rarity.RARE, mage.cards.g.GoblinLyre.class));
         cards.add(new SetCardInfo("Goblin Mutant", 188, Rarity.UNCOMMON, mage.cards.g.GoblinMutant.class));
         cards.add(new SetCardInfo("Goblin Snowman", 191, Rarity.UNCOMMON, mage.cards.g.GoblinSnowman.class));