Add Central elevator (#6292)

forge-game/src/main/java/forge/game/ability/AbilityUtils.java

@@ -2526,6 +2526,23 @@ public static int xCount(Card c, final String s, final CardTraitBase ctb) {
             return doXMath(unlocked, expr, c, ctb);
         }
 
+        // Count$DistinctUnlockedDoors <Valid>
+        // Counts the distinct names of unlocked doors. Used for the "Promising Stairs"
+        if (sq[0].startsWith("DistinctUnlockedDoors")) {
+            final String[] workingCopy = l[0].split(" ", 2);
+            final String validFilter = workingCopy[1];
+
+            Set<String> viewedNames = new HashSet<>();
+            for (Card doorCard : CardLists.getValidCards(player.getCardsIn(ZoneType.Battlefield), validFilter, player, c, ctb)) {
+                for(CardStateName stateName : doorCard.getUnlockedRooms()) {
+                    viewedNames.add(doorCard.getState(stateName).getName());
+                }
+            }
+            int distinctUnlocked = viewedNames.size();
+
+            return doXMath(distinctUnlocked, expr, c, ctb);
+        }
+
         // Manapool
         if (sq[0].startsWith("ManaPool")) {
             final String color = l[0].split(":")[1];

forge-gui/res/cardsfolder/upcoming/central_elevator_promising_stairs.txt

@@ -0,0 +1,18 @@
+Name:Central Elevator
+ManaCost:3 U
+Types:Enchantment Room
+T:Mode$ UnlockDoor | ValidPlayer $ You | ValidCard$ Card.Self | ThisDoor$ True | Execute$ TrigSearch | TriggerDescription$ When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle.
+SVar:TrigSearch:DB$ ChangeZone | ChangeType$ Room.doesNotShareNameWith Room.YouCtrl | ChangeNum$ 1 | Origin$ Library | Destination$ Hand
+AlternateMode:Split
+Oracle:When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle.
+
+ALTERNATE
+
+Name:Promising Stairs
+ManaCost:2 U
+Types:Enchantment Room
+T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ TrigSurveil | TriggerDescription$ At the beginning of your upkeep, surveil 1. You win the game if there are eight or more different names among unlocked doors of Rooms you control.
+SVar:TrigSurveil:DB$ Surveil | SubAbility$ DBWin
+SVar:DBWin:DB$ WinsGame | Defined$ You | ConditionCheckSVar$ RoomsUnlocked | ConditionSVarCompare$ GE8
+SVar:RoomsUnlocked:Count$DistinctUnlockedDoors Card.Room+YouCtrl
+Oracle:At the beginning of your upkeep, surveil 1. You win the game if there are eight or more different names among unlocked doors of Rooms you control.