Totem Armor mechanic

Mage.Sets/src/mage/sets/riseoftheeldrazi/HyenaUmbra.java

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+/*
+ *  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.riseoftheeldrazi;
+
+import java.util.UUID;
+
+import mage.Constants;
+import mage.Constants.CardType;
+import mage.Constants.Rarity;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.common.AttachEffect;
+import mage.abilities.effects.common.continious.BoostEnchantedEffect;
+import mage.abilities.effects.common.continious.GainAbilityAttachedEffect;
+import mage.abilities.keyword.EnchantAbility;
+import mage.abilities.keyword.FirstStrikeAbility;
+import mage.abilities.keyword.TotemArmorAbility;
+import mage.cards.CardImpl;
+import mage.target.TargetPermanent;
+import mage.target.common.TargetCreaturePermanent;
+
+/**
+ *
+ * @author Loki
+ */
+public class HyenaUmbra extends CardImpl<HyenaUmbra> {
+
+    public HyenaUmbra(UUID ownerId) {
+        super(ownerId, 26, "Hyena Umbra", Rarity.COMMON, new CardType[]{CardType.ENCHANTMENT}, "{W}");
+        this.expansionSetCode = "ROE";
+        this.subtype.add("Aura");
+
+        this.color.setWhite(true);
+
+        // Enchant creature
+        TargetPermanent auraTarget = new TargetCreaturePermanent();
+		this.getSpellAbility().addTarget(auraTarget);
+		this.getSpellAbility().addEffect(new AttachEffect(Constants.Outcome.BoostCreature));
+		Ability ability = new EnchantAbility(auraTarget.getTargetName());
+        this.addAbility(ability);
+        // Enchanted creature gets +1/+1 and has first strike.
+        this.addAbility(new SimpleStaticAbility(Constants.Zone.BATTLEFIELD, new BoostEnchantedEffect(1, 1, Constants.Duration.WhileOnBattlefield)));
+        this.addAbility(new SimpleStaticAbility(Constants.Zone.BATTLEFIELD, new GainAbilityAttachedEffect(FirstStrikeAbility.getInstance(), Constants.AttachmentType.AURA)));        // Totem armor
+        // Totem armor
+        this.addAbility(new TotemArmorAbility());
+    }
+
+    public HyenaUmbra(final HyenaUmbra card) {
+        super(card);
+    }
+
+    @Override
+    public HyenaUmbra copy() {
+        return new HyenaUmbra(this);
+    }
+}

Mage/src/mage/abilities/keyword/TotemArmorAbility.java

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+package mage.abilities.keyword;
+
+import mage.Constants;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+
+public class TotemArmorAbility extends SimpleStaticAbility {
+    public TotemArmorAbility() {
+        super(Constants.Zone.BATTLEFIELD, new TotemArmorEffect());
+    }
+
+    public TotemArmorAbility(final TotemArmorAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public SimpleStaticAbility copy() {
+        return new TotemArmorAbility(this);
+    }
+
+    @Override
+    public String getRule() {
+        return "Totem Armor";
+    }
+}
+
+class TotemArmorEffect extends ReplacementEffectImpl<TotemArmorEffect> {
+    TotemArmorEffect() {
+        super(Constants.Duration.WhileOnBattlefield, Constants.Outcome.Benefit);
+    }
+
+    TotemArmorEffect(final TotemArmorEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        Permanent sourcePermanent = game.getPermanent(source.getSourceId());
+        if (sourcePermanent != null) {
+            Permanent equipedPermanent = game.getPermanent(event.getTargetId());
+            if (equipedPermanent != null) {
+                equipedPermanent.removeAllDamage(game);
+                sourcePermanent.destroy(source.getSourceId(), game, false);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        if (event.getType() == GameEvent.EventType.DESTROY_PERMANENT) {
+            Permanent sourcePermanent = game.getPermanent(source.getSourceId());
+            if (sourcePermanent != null && event.getTargetId().equals(sourcePermanent.getAttachedTo())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return true;
+    }
+
+    @Override
+    public TotemArmorEffect copy() {
+        return new TotemArmorEffect(this);
+    }
+}