Implement VisionCharm

-The first two effects use already existing effects, while the third one
uses a custom effect (VisionCharmEffect) to transform every land of the
given type currently on the battlefield to a land of the given Basic Land
Type until the end of the turn.
Any existing subtype or ability is temporarily removed and substituted
with the Basic Land's subtype and mana ability

Mage.Sets/src/mage/sets/visions/VisionCharm.java

@@ -0,0 +1,172 @@
+/*
+ *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without modification, are
+ *  permitted provided that the following conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *     2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are those of the
+ *  authors and should not be interpreted as representing official policies, either expressed
+ *  or implied, of BetaSteward_at_googlemail.com.
+ */
+package mage.sets.visions;
+
+import java.util.UUID;
+import mage.abilities.Ability;
+import mage.abilities.Mode;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.effects.common.PhaseOutTargetEffect;
+import mage.abilities.effects.common.PutLibraryIntoGraveTargetEffect;
+import mage.abilities.mana.BlackManaAbility;
+import mage.abilities.mana.BlueManaAbility;
+import mage.abilities.mana.GreenManaAbility;
+import mage.abilities.mana.RedManaAbility;
+import mage.abilities.mana.WhiteManaAbility;
+import mage.cards.CardImpl;
+import mage.choices.Choice;
+import mage.choices.ChoiceLandType;
+import mage.choices.ChoiceBasicLandType;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.constants.Layer;
+import mage.constants.Outcome;
+import mage.constants.Rarity;
+import mage.constants.SubLayer;
+import mage.filter.common.FilterLandPermanent;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPlayer;
+import mage.target.common.TargetArtifactPermanent;
+import mage.filter.FilterPermanent;
+import mage.filter.predicate.mageobject.SubtypePredicate;
+
+/**
+ *
+ * @author tre3qwerty
+ */
+public class VisionCharm extends CardImpl {
+
+    public VisionCharm(UUID ownerId) {
+        super(ownerId, 49, "Vision Charm", Rarity.COMMON, new CardType[]{CardType.INSTANT}, "{U}");
+        this.expansionSetCode = "VIS";
+
+
+        // Choose one - Phase target artifact
+        this.getSpellAbility().addEffect(new PhaseOutTargetEffect());
+        this.getSpellAbility().addTarget(new TargetArtifactPermanent());
+        // or Target player puts the top four cards of his or her library into his or her graveyard.
+        Mode mode = new Mode();
+        mode.getEffects().add(new PutLibraryIntoGraveTargetEffect(4));
+        mode.getTargets().add(new TargetPlayer());
+        this.getSpellAbility().addMode(mode);
+        // or choose a land type and a basic land type. Each land of the first chosen type becomes the second chosen type until end of turn.
+        mode = new Mode();
+        mode.getEffects().add(new VisionCharmEffect());
+        this.getSpellAbility().addMode(mode);
+    }
+
+    public VisionCharm(final VisionCharm card) {
+        super(card);
+    }
+
+    @Override
+    public VisionCharm copy() {
+        return new VisionCharm(this);
+    }
+}
+
+class VisionCharmEffect extends ContinuousEffectImpl {
+    private String targetLandType;
+    private String targetBasicLandType;
+    
+     public VisionCharmEffect() {
+        super(Duration.EndOfTurn, Outcome.Neutral);
+        staticText = "Choose a land type and a basic land type. Each land of the first chosen type becomes the second chosen type until end of turn.";
+    }
+
+    public VisionCharmEffect(final VisionCharmEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public VisionCharmEffect copy() {
+        return new VisionCharmEffect(this);
+    }
+    
+    @Override
+    public void init(Ability source, Game game) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if(controller != null) {
+            Choice choice = new ChoiceLandType();
+            controller.choose(outcome, choice, game);
+            targetLandType = choice.getChoice();
+            
+            choice = new ChoiceBasicLandType();
+            controller.choose(outcome, choice, game);
+            targetBasicLandType = choice.getChoice();
+        }
+        else {
+            this.discard();
+        }
+    }
+
+    @Override
+    public boolean apply(Layer layer, SubLayer sublayer, Ability source, Game game) {
+        FilterPermanent filter = new FilterLandPermanent();
+        filter.add(new SubtypePredicate(targetLandType));
+        for (Permanent land : game.getBattlefield().getActivePermanents(filter, source.getControllerId(), game)) {
+            //Remove all existing subtypes and replace them with the selected Basic Land Type
+            land.getSubtype().removeAll(land.getSubtype());
+            land.getSubtype().add(targetBasicLandType);
+            
+            /* Remove the existing abilities and replace them with the ability
+               of the chosen basic land */
+            land.removeAllAbilities(source.getId(), game);
+            switch(targetBasicLandType) {
+                case "Swamp":
+                    land.addAbility(new BlackManaAbility(), source.getSourceId(), game);
+                    break;
+                case "Mountain":
+                    land.addAbility(new RedManaAbility(), source.getSourceId(), game);
+                    break;
+                case "Forest":
+                    land.addAbility(new GreenManaAbility(), source.getSourceId(), game);
+                    break;
+                case "Island":
+                    land.addAbility(new BlueManaAbility(), source.getSourceId(), game);
+                    break;
+                case "Plains":
+                    land.addAbility(new WhiteManaAbility(), source.getSourceId(), game);
+                    break;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return false;
+    }
+
+    @Override
+    public boolean hasLayer(Layer layer) {
+        return layer == Layer.AbilityAddingRemovingEffects_6 || layer == Layer.TypeChangingEffects_4;
+    }
+}