From 767e13c5479890491f2e7adf2c608f8336879ca7 Mon Sep 17 00:00:00 2001
From: Agetian <stavdev@mail.ru>
Date: Sun, 16 Dec 2018 09:50:18 +0300
Subject: [PATCH] - NPE guard.

---
 forge-ai/src/main/java/forge/ai/AiController.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/forge-ai/src/main/java/forge/ai/AiController.java b/forge-ai/src/main/java/forge/ai/AiController.java
index 64e38102def..d9b8f9fefab 100644
--- a/forge-ai/src/main/java/forge/ai/AiController.java
+++ b/forge-ai/src/main/java/forge/ai/AiController.java
@@ -850,7 +850,7 @@ public class AiController {
         int neededMana = 0;
         boolean dangerousRecurringCost = false;
 
-        Cost costWithBuyback = sa.getPayCosts().copy();
+        Cost costWithBuyback = sa.getPayCosts() != null ? sa.getPayCosts().copy() : Cost.Zero;
         for (OptionalCostValue opt : GameActionUtil.getOptionalCostValues(sa)) {
             if (opt.getType() == OptionalCost.Buyback) {
                 costWithBuyback.add(opt.getCost());