[BFZ] Added Dust Stalker, Bring to Light, Ally Encampment and Woodland Wanderer.

Mage/src/mage/abilities/mana/builder/SubtypeCastManaBuilder.java

@@ -0,0 +1,67 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package mage.abilities.mana.builder;
+
+import java.util.UUID;
+import mage.ConditionalMana;
+import mage.MageObject;
+import mage.Mana;
+import mage.abilities.Ability;
+import mage.abilities.mana.conditional.CreatureCastManaCondition;
+import mage.game.Game;
+
+/**
+ *
+ * @author LevelX2
+ */
+public class SubtypeCastManaBuilder extends ConditionalManaBuilder {
+
+    private final String subtype;
+
+    public SubtypeCastManaBuilder(String subtype) {
+        this.subtype = subtype;
+    }
+
+    @Override
+    public ConditionalMana build(Object... options) {
+        this.mana.setFlag(true); // indicates that the mana is from second ability
+        return new SubtypeCastConditionalMana(this.mana, subtype);
+    }
+
+    @Override
+    public String getRule() {
+        return "Spend this mana only to cast a " + subtype + " spell.";
+    }
+}
+
+class SubtypeCastConditionalMana extends ConditionalMana {
+
+    SubtypeCastConditionalMana(Mana mana, String subtype) {
+        super(mana);
+        staticText = "Spend this mana only to cast a " + subtype + " spell.";
+        addCondition(new SubtypeCastManaCondition(subtype));
+    }
+}
+
+class SubtypeCastManaCondition extends CreatureCastManaCondition {
+
+    private final String subtype;
+
+    public SubtypeCastManaCondition(String subtype) {
+        this.subtype = subtype;
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source, UUID manaProducer) {
+        if (super.apply(game, source)) {
+            MageObject object = game.getObject(source.getSourceId());
+            if (object.hasSubtype(subtype)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}