[MOC] Implement Emergent Woodwurm

Mage.Sets/src/mage/cards/e/EmergentWoodwurm.java

@@ -0,0 +1,81 @@
+package mage.cards.e;
+
+import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.common.AttacksTriggeredAbility;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.dynamicvalue.common.SourcePermanentPowerCount;
+import mage.abilities.effects.common.LookLibraryAndPickControllerEffect;
+import mage.abilities.keyword.BackupAbility;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.PutCards;
+import mage.constants.SubType;
+import mage.filter.FilterCard;
+import mage.filter.common.FilterPermanentCard;
+import mage.filter.predicate.ObjectSourcePlayer;
+import mage.filter.predicate.ObjectSourcePlayerPredicate;
+import mage.game.Game;
+
+import java.util.Objects;
+import java.util.Optional;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class EmergentWoodwurm extends CardImpl {
+
+    private static final FilterCard filter = new FilterPermanentCard("permanent card with mana value X or less");
+
+    static {
+        filter.add(EmergentWoodwurmPredicate.instance);
+    }
+
+    private static final DynamicValue xValue = new SourcePermanentPowerCount(false);
+
+    public EmergentWoodwurm(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{6}{G}");
+
+        this.subtype.add(SubType.WURM);
+        this.power = new MageInt(4);
+        this.toughness = new MageInt(4);
+
+        // Backup 3
+        BackupAbility backupAbility = new BackupAbility(this, 3);
+        this.addAbility(backupAbility);
+
+        // Whenever this creature attacks, look at the top X cards of your library, where X is its power. You may put a permanent card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
+        backupAbility.addAbility(new AttacksTriggeredAbility(new LookLibraryAndPickControllerEffect(
+                xValue, 1, filter, PutCards.BATTLEFIELD, PutCards.BOTTOM_RANDOM
+        )).setTriggerPhrase("Whenever this creature attacks, "));
+    }
+
+    private EmergentWoodwurm(final EmergentWoodwurm card) {
+        super(card);
+    }
+
+    @Override
+    public EmergentWoodwurm copy() {
+        return new EmergentWoodwurm(this);
+    }
+}
+
+enum EmergentWoodwurmPredicate implements ObjectSourcePlayerPredicate<Card> {
+    instance;
+
+    @Override
+    public boolean apply(ObjectSourcePlayer<Card> input, Game game) {
+        return Optional
+                .of(input)
+                .map(ObjectSourcePlayer::getSource)
+                .map(ability -> ability.getSourcePermanentOrLKI(game))
+                .filter(Objects::nonNull)
+                .map(MageObject::getPower)
+                .map(MageInt::getValue)
+                .map(i -> input.getObject().getManaValue() <= i)
+                .orElse(false);
+    }
+}

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

@@ -91,6 +91,7 @@ public final class MarchOfTheMachineCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Echo Storm", 221, Rarity.RARE, mage.cards.e.EchoStorm.class));
         cards.add(new SetCardInfo("Elite Scaleguard", 181, Rarity.UNCOMMON, mage.cards.e.EliteScaleguard.class));
         cards.add(new SetCardInfo("Elspeth, Sun's Champion", 182, Rarity.MYTHIC, mage.cards.e.ElspethSunsChampion.class));
+        cards.add(new SetCardInfo("Emergent Woodwurm", 37, Rarity.RARE, mage.cards.e.EmergentWoodwurm.class));
         cards.add(new SetCardInfo("Emeria Angel", 183, Rarity.RARE, mage.cards.e.EmeriaAngel.class));
         cards.add(new SetCardInfo("Enduring Scalelord", 325, Rarity.UNCOMMON, mage.cards.e.EnduringScalelord.class));
         cards.add(new SetCardInfo("Ephemeral Shields", 184, Rarity.COMMON, mage.cards.e.EphemeralShields.class));