[KHM] Implemented Varragoth, Bloodsky Sire (#7341)

* [KHM] Implemented Boast mechanic

* BoastAbility - Added author tag

* [KHM] Implemented Varragoth, Bloodsky Sire

* [KHM] Fixup BoastAbility and added BoastHint

* [KHM] BoastAbility - Call super instead of copying code

Mage/src/main/java/mage/abilities/condition/common/BoastCondition.java

@@ -0,0 +1,29 @@
+package mage.abilities.condition.common;
+
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.condition.Condition;
+import mage.abilities.keyword.BoastAbility;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.watchers.common.AttackedThisTurnWatcher;
+
+/**
+ *
+ * @author weirddan455
+ */
+public enum BoastCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent creature = game.getPermanentOrLKIBattlefield(source.getSourceId());
+        AttackedThisTurnWatcher watcher = game.getState().getWatcher(AttackedThisTurnWatcher.class);
+        if (source instanceof BoastAbility && creature != null && watcher != null) {
+            BoastAbility ability = (BoastAbility) source;
+            return ability.hasMoreActivationsThisTurn(game) &&
+                    watcher.getAttackedThisTurnCreatures().contains(new MageObjectReference(creature, game));
+        }
+        return false;
+    }
+}

Mage/src/main/java/mage/abilities/hint/common/BoastHint.java

@@ -0,0 +1,28 @@
+package mage.abilities.hint.common;
+
+import mage.abilities.Ability;
+import mage.abilities.condition.common.BoastCondition;
+import mage.abilities.hint.ConditionHint;
+import mage.abilities.hint.Hint;
+import mage.game.Game;
+
+/**
+ *
+ * @author weirddan455
+ */
+public enum BoastHint implements Hint {
+    instance;
+    private static final ConditionHint hint = new ConditionHint(BoastCondition.instance,
+            "Can activate Boast ability", null,
+            "Can't activate Boast ability", null, true);
+
+    @Override
+    public String getText(Game game, Ability ability) {
+        return hint.getText(game, ability);
+    }
+
+    @Override
+    public Hint copy() {
+        return instance;
+    }
+}

Mage/src/main/java/mage/abilities/keyword/BoastAbility.java

@@ -0,0 +1,45 @@
+package mage.abilities.keyword;
+
+import mage.abilities.ActivatedAbilityImpl;
+import mage.abilities.condition.common.BoastCondition;
+import mage.abilities.costs.mana.ManaCosts;
+import mage.abilities.effects.Effect;
+import mage.abilities.hint.common.BoastHint;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.watchers.common.AttackedThisTurnWatcher;
+
+/**
+ *
+ * @author weirddan455
+ */
+public class BoastAbility extends ActivatedAbilityImpl {
+
+    public BoastAbility(Effect effect, ManaCosts cost) {
+        super(Zone.BATTLEFIELD, effect, cost);
+        this.maxActivationsPerTurn = 1;
+        this.addWatcher(new AttackedThisTurnWatcher());
+        this.condition = BoastCondition.instance;
+        this.addHint(BoastHint.instance);
+    }
+
+    public BoastAbility(BoastAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public BoastAbility copy() {
+        return new BoastAbility(this);
+    }
+
+    // Needed to make this public for BoastHint to work correctly (called by BoastCondition)
+    @Override
+    public boolean hasMoreActivationsThisTurn(Game game) {
+        return super.hasMoreActivationsThisTurn(game);
+    }
+
+    @Override
+    public String getRule() {
+        return "Boast &mdash; " + super.getRule() + " <i>(Activate this ability only if this creature attacked this turn and only once each turn.)</i>";
+    }
+}