From 49889eb7c9cc6cef0ff6eb356ae5e7d2fd6b5cf7 Mon Sep 17 00:00:00 2001
From: Maxmtg <maxmtg@cardforge.org>
Date: Mon, 3 Jun 2013 08:32:49 +0000
Subject: [PATCH] bugfix: Omnath, Locus of Mana now prevents green mana from
 being burnt at end of phase

---
 src/main/java/forge/card/mana/ManaPool.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/forge/card/mana/ManaPool.java b/src/main/java/forge/card/mana/ManaPool.java
index 00e8f88cc82..ec33e54f7c5 100644
--- a/src/main/java/forge/card/mana/ManaPool.java
+++ b/src/main/java/forge/card/mana/ManaPool.java
@@ -25,6 +25,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.tuple.Pair;
 
 import com.google.common.base.Supplier;
+import com.google.common.collect.Lists;
+
 import forge.card.MagicColor;
 import forge.card.spellability.AbilityManaPart;
 import forge.card.spellability.SpellAbility;
@@ -108,7 +110,7 @@ public class ManaPool {
         int numRemoved = 0;
         boolean keepGreenMana = isEndOfPhase && this.owner.hasKeyword("Green mana doesn't empty from your mana pool as steps and phases end."); 
 
-        Set<Byte> keys = floatingMana.keySet();
+        List<Byte> keys = Lists.newArrayList(floatingMana.keySet());
         if ( keepGreenMana )
             keys.remove(Byte.valueOf(MagicColor.GREEN));