[BLB] Implement Wandertale Mentor

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

@@ -0,0 +1,50 @@
+package mage.abilities.common;
+
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+
+/**
+ * @author TheElk801
+ * TODO: Implement this
+ */
+public class ExpendTriggeredAbility extends TriggeredAbilityImpl {
+
+    private final int amount;
+
+    public ExpendTriggeredAbility(Effect effect, int amount) {
+        this(effect, amount, false);
+    }
+
+    public ExpendTriggeredAbility(Effect effect, int amount, boolean optional) {
+        this(Zone.BATTLEFIELD, effect, amount, optional);
+    }
+
+    public ExpendTriggeredAbility(Zone zone, Effect effect, int amount, boolean optional) {
+        super(zone, effect, optional);
+        this.amount = amount;
+        setTriggerPhrase("Whenever you expend " + amount + ", ");
+    }
+
+    private ExpendTriggeredAbility(final ExpendTriggeredAbility ability) {
+        super(ability);
+        this.amount = ability.amount;
+    }
+
+    @Override
+    public ExpendTriggeredAbility copy() {
+        return new ExpendTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return false;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        return false;
+    }
+}