From 3301cc3b7879a28d9f24dfe32d4592640fa41e92 Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Sat, 13 Apr 2019 20:28:52 -0400
Subject: [PATCH] fixed Niv-Mizzet Reborn not allowing any selections (fixes
 #5713)

---
 Mage.Sets/src/mage/cards/n/NivMizzetReborn.java | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Mage.Sets/src/mage/cards/n/NivMizzetReborn.java b/Mage.Sets/src/mage/cards/n/NivMizzetReborn.java
index 28e5913f164..761aac87406 100644
--- a/Mage.Sets/src/mage/cards/n/NivMizzetReborn.java
+++ b/Mage.Sets/src/mage/cards/n/NivMizzetReborn.java
@@ -91,11 +91,19 @@ class NivMizzetRebornEffect extends OneShotEffect {
             String otherColors = "";
             for (char c : "WUBRG".toCharArray()) {
                 if (color1.charAt(0) == c || color2.charAt(0) == c) {
-                    otherColors += c;
+                    continue;
                 }
+                otherColors += c;
             }
             return otherColors;
         }
+
+        private boolean isInCards(Cards cards, Game game) {
+            FilterCard filter = new FilterCard(getDescription());
+            filter.add(new ColorPredicate(new ObjectColor(color1 + color2)));
+            filter.add(Predicates.not(new ColorPredicate(new ObjectColor(getOtherColors()))));
+            return cards.getCards(game).stream().anyMatch(card -> filter.match(card, game));
+        }
     }
 
     NivMizzetRebornEffect() {
@@ -127,6 +135,9 @@ class NivMizzetRebornEffect extends OneShotEffect {
         }
         player.revealCards(source, cards, game);
         for (Guild guild : Guild.values()) {
+            if (!guild.isInCards(cards, game)) {
+                continue;
+            }
             TargetCard target = guild.getTarget();
             if (player.choose(outcome, cards, target, game)) {
                 Card card = game.getCard(target.getFirstTarget());