From f90af4784ec41655ccb2e52b53739f6f5096119b Mon Sep 17 00:00:00 2001
From: Sol <zenchristo@gmail.com>
Date: Sun, 10 Dec 2017 20:30:48 +0000
Subject: [PATCH] Fix Signets being exploitable by not actually paying for
 activation

---
 .../src/main/java/forge/match/input/InputPayMana.java  | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/forge-gui/src/main/java/forge/match/input/InputPayMana.java b/forge-gui/src/main/java/forge/match/input/InputPayMana.java
index aa5660f02e7..49732cf50fb 100644
--- a/forge-gui/src/main/java/forge/match/input/InputPayMana.java
+++ b/forge-gui/src/main/java/forge/match/input/InputPayMana.java
@@ -302,13 +302,15 @@ public abstract class InputPayMana extends InputSyncronizedBase {
         game.getAction().invoke(new Runnable() {
             @Override
             public void run() {
-                HumanPlay.playSpellAbility(getController(), chosen.getActivatingPlayer(), chosen);
-                player.getManaPool().payManaFromAbility(saPaidFor, InputPayMana.this.manaCost, chosen);
+                if (HumanPlay.playSpellAbility(getController(), chosen.getActivatingPlayer(), chosen)) {
+                    player.getManaPool().payManaFromAbility(saPaidFor, InputPayMana.this.manaCost, chosen);
 
-                onManaAbilityPaid();
-                onStateChanged();
+                    onManaAbilityPaid();
+                    onStateChanged();
+                }
             }
         });
+
         return true;
     }