[KHM] Implemented Doomskar Oracle

Mage/src/main/java/mage/abilities/common/CastSecondSpellTriggeredAbility.java

@@ -0,0 +1,78 @@
+package mage.abilities.common;
+
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.hint.Hint;
+import mage.abilities.hint.ValueHint;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.watchers.common.CastSpellLastTurnWatcher;
+
+/**
+ * @author TheElk801
+ */
+public class CastSecondSpellTriggeredAbility extends TriggeredAbilityImpl {
+
+    private static final Hint hint = new ValueHint("Spells you cast this turn", SpellCastValue.instance);
+
+    public CastSecondSpellTriggeredAbility(Effect effect) {
+        this(Zone.BATTLEFIELD, effect, false);
+    }
+
+    public CastSecondSpellTriggeredAbility(Zone zone, Effect effect, boolean optional) {
+        super(zone, effect, optional);
+        this.addWatcher(new CastSpellLastTurnWatcher());
+        this.addHint(hint);
+    }
+
+    private CastSecondSpellTriggeredAbility(final CastSecondSpellTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.SPELL_CAST;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (!isControlledBy(event.getPlayerId())) {
+            return false;
+        }
+        CastSpellLastTurnWatcher watcher = game.getState().getWatcher(CastSpellLastTurnWatcher.class);
+        return watcher != null && watcher.getAmountOfSpellsPlayerCastOnCurrentTurn(event.getPlayerId()) == 2;
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever you cast your second spell each turn, " + super.getRule();
+    }
+
+    @Override
+    public CastSecondSpellTriggeredAbility copy() {
+        return new CastSecondSpellTriggeredAbility(this);
+    }
+}
+
+enum SpellCastValue implements DynamicValue {
+    instance;
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        CastSpellLastTurnWatcher watcher = game.getState().getWatcher(CastSpellLastTurnWatcher.class);
+        return watcher != null ? watcher.getAmountOfSpellsPlayerCastOnCurrentTurn(sourceAbility.getControllerId()) : 0;
+    }
+
+    @Override
+    public SpellCastValue copy() {
+        return instance;
+    }
+
+    @Override
+    public String getMessage() {
+        return "";
+    }
+}