Implemented Obosh, the Preypiercer

Mage.Sets/src/mage/cards/k/KerugaTheMacrosage.java

@@ -42,7 +42,7 @@ public final class KerugaTheMacrosage extends CardImpl {
         this.toughness = new MageInt(4);
 
         // Companion — Your starting deck contains only cards with converted mana cost 3 or greater and land cards.
-        this.addAbility(new CompanionAbility(new KerugaCondition()));
+        this.addAbility(new CompanionAbility(KerugaCondition.instance));
         // When Keruga, the Macrosage enters the battlefield, draw a card for each other permanent you control with converted mana cost 3 or greater.
         this.addAbility(new EntersBattlefieldTriggeredAbility(new DrawCardSourceControllerEffect(new PermanentsOnBattlefieldCount(filter))));
     }
@@ -57,7 +57,8 @@ public final class KerugaTheMacrosage extends CardImpl {
     }
 }
 
-class KerugaCondition implements CompanionCondition {
+enum KerugaCondition implements CompanionCondition {
+    instance;
 
     @Override
     public String getRule() {

Mage.Sets/src/mage/cards/o/OboshThePreypiercer.java

@@ -0,0 +1,108 @@
+package mage.cards.o;
+
+import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.abilities.keyword.CompanionAbility;
+import mage.abilities.keyword.CompanionCondition;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.util.CardUtil;
+
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class OboshThePreypiercer extends CardImpl {
+
+    public OboshThePreypiercer(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{B/R}{B/R}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.HELLION);
+        this.subtype.add(SubType.HORROR);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(5);
+
+        // Companion — Your starting deck contains only cards with odd converted mana costs and land cards.
+        this.addAbility(new CompanionAbility(OboshThePreypiercerCompanionCondition.instance));
+
+        // If a source you control with an odd converted mana cost would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.
+        this.addAbility(new SimpleStaticAbility(new OboshThePreypiercerEffect()));
+    }
+
+    private OboshThePreypiercer(final OboshThePreypiercer card) {
+        super(card);
+    }
+
+    @Override
+    public OboshThePreypiercer copy() {
+        return new OboshThePreypiercer(this);
+    }
+}
+
+enum OboshThePreypiercerCompanionCondition implements CompanionCondition {
+    instance;
+
+    @Override
+    public String getRule() {
+        return "Your starting deck contains only cards with odd converted mana costs and land cards.";
+    }
+
+    @Override
+    public boolean isLegal(Set<Card> deck) {
+        return deck
+                .stream()
+                .filter(card -> !card.isLand())
+                .mapToInt(MageObject::getConvertedManaCost)
+                .map(i -> i & 1)
+                .allMatch(i -> i == 1);
+    }
+}
+
+class OboshThePreypiercerEffect extends ReplacementEffectImpl {
+
+    OboshThePreypiercerEffect() {
+        super(Duration.WhileOnBattlefield, Outcome.Damage);
+        staticText = "If a source you control with an odd converted mana cost would deal damage " +
+                "to a permanent or player, it deals double that damage to that permanent or player instead.";
+    }
+
+    private OboshThePreypiercerEffect(final OboshThePreypiercerEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public OboshThePreypiercerEffect copy() {
+        return new OboshThePreypiercerEffect(this);
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType().equals(GameEvent.EventType.DAMAGE_PLAYER)
+                || event.getType().equals(GameEvent.EventType.DAMAGE_CREATURE)
+                || event.getType().equals(GameEvent.EventType.DAMAGE_PLANESWALKER);
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        MageObject sourceObject = source.getSourceObjectIfItStillExists(game);
+        return sourceObject != null
+                && sourceObject.getConvertedManaCost() % 2 == 1
+                && game.getControllerId(event.getSourceId()).equals(source.getControllerId());
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        event.setAmount(CardUtil.addWithOverflowCheck(event.getAmount(), event.getAmount()));
+        return false;
+    }
+}

Mage.Sets/src/mage/cards/u/UmoriTheCollector.java

@@ -36,7 +36,7 @@ public final class UmoriTheCollector extends CardImpl {
         this.toughness = new MageInt(5);
 
         // Companion — Each nonland card in your starting deck shares a card type.
-        this.addAbility(new CompanionAbility(new UmoriCondition()));
+        this.addAbility(new CompanionAbility(UmoriCondition.instance));
 
         // As Umori, the Collector enters the battlefield, choose a card type.
         this.addAbility(new AsEntersBattlefieldAbility(new ChooseCardTypeEffect(Outcome.Benefit)));
@@ -55,7 +55,8 @@ public final class UmoriTheCollector extends CardImpl {
     }
 }
 
-class UmoriCondition implements CompanionCondition {
+enum UmoriCondition implements CompanionCondition {
+    instance;
 
     @Override
     public String getRule() {

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

@@ -214,6 +214,7 @@ public final class IkoriaLairOfBehemoths extends ExpansionSet {
         cards.add(new SetCardInfo("Nethroi, Apex of Death", 197, Rarity.MYTHIC, mage.cards.n.NethroiApexOfDeath.class));
         cards.add(new SetCardInfo("Neutralize", 59, Rarity.UNCOMMON, mage.cards.n.Neutralize.class));
         cards.add(new SetCardInfo("Nightsquad Commando", 98, Rarity.COMMON, mage.cards.n.NightsquadCommando.class));
+        cards.add(new SetCardInfo("Obosh, the Preypiercer", 228, Rarity.RARE, mage.cards.o.OboshThePreypiercer.class));
         cards.add(new SetCardInfo("Of One Mind", 60, Rarity.COMMON, mage.cards.o.OfOneMind.class));
         cards.add(new SetCardInfo("Offspring's Revenge", 198, Rarity.RARE, mage.cards.o.OffspringsRevenge.class));
         cards.add(new SetCardInfo("Ominous Seas", 61, Rarity.UNCOMMON, mage.cards.o.OminousSeas.class));