- Added Snowfall

forge-game/src/main/java/forge/game/phase/Upkeep.java

@@ -164,6 +164,7 @@ public class Upkeep extends Phase {
                             c.addCounter(CounterType.AGE, 1, true);
                             String cost = CardFactoryUtil.multiplyCost(k[1], c.getCounters(CounterType.AGE));
                             final Cost upkeepCost = new Cost(cost, true);
+                            this.setCumulativeupkeep(true);
                             boolean isPaid = controller.getController().payManaOptional(c, upkeepCost, this, sb.toString(), ManaPaymentPurpose.CumulativeUpkeep);
                             final HashMap<String, Object> runParams = new HashMap<String, Object>();
                             runParams.put("CumulativeUpkeepPaid", (Boolean) isPaid);

forge-game/src/main/java/forge/game/spellability/AbilityManaPart.java

@@ -284,6 +284,14 @@ public class AbilityManaPart implements java.io.Serializable {
             if (restriction.equals("nonSpell")) {
                 return !sa.isSpell();
             }
+            
+            if (restriction.equals("CumulativeUpkeep")) {
+                if (sa.isCumulativeupkeep()) {
+                    return true;
+                } else {
+                    continue;
+                }
+            }
 
             if (restriction.startsWith("CostContainsX")) {
                 if (sa.isXCost()) {

forge-game/src/main/java/forge/game/spellability/SpellAbility.java

@@ -90,6 +90,7 @@ public abstract class SpellAbility extends CardTraitBase implements ISpellAbilit
     private boolean delve = false;
     private boolean offering = false;
     private boolean morphup = false;
+    private boolean cumulativeupkeep = false;
     private int totalManaSpent = 0;
 
     /** The pay costs. */
@@ -1728,6 +1729,14 @@ public abstract class SpellAbility extends CardTraitBase implements ISpellAbilit
         this.madness = madness;
     }
 
+    public boolean isCumulativeupkeep() {
+        return cumulativeupkeep;
+    }
+
+    public void setCumulativeupkeep(boolean cumulativeupkeep) {
+        this.cumulativeupkeep = cumulativeupkeep;
+    }
+
     // Return whether this spell tracks what color mana is spent to cast it for the sake of the effect
     public boolean tracksManaSpent() {
         if (this.hostCard == null || this.hostCard.getRules() == null) { return false; }