Implemented Sphinx of the Guildpact

Mage/src/main/java/mage/abilities/keyword/HexproofFromMonocoloredAbility.java

@@ -0,0 +1,44 @@
+package mage.abilities.keyword;
+
+import mage.abilities.MageSingleton;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.constants.Zone;
+
+import java.io.ObjectStreamException;
+
+/**
+ * Hexproof from Monocolored (This creature or player can't be the target of monocolored
+ * spells or abilities your opponents control.)
+ *
+ * @author TheElk801
+ */
+public class HexproofFromMonocoloredAbility extends SimpleStaticAbility implements MageSingleton {
+
+    private static final HexproofFromMonocoloredAbility instance;
+
+    static {
+        instance = new HexproofFromMonocoloredAbility();
+    }
+
+    private Object readResolve() throws ObjectStreamException {
+        return instance;
+    }
+
+    public static HexproofFromMonocoloredAbility getInstance() {
+        return instance;
+    }
+
+    private HexproofFromMonocoloredAbility() {
+        super(Zone.BATTLEFIELD, null);
+    }
+
+    @Override
+    public HexproofFromMonocoloredAbility copy() {
+        return instance;
+    }
+
+    @Override
+    public String getRule() {
+        return "hexproof from monocolored <i>(This creature can't be the target of monocolored spells or abilities your opponents control.)</i>";
+    }
+}

Mage/src/main/java/mage/game/permanent/PermanentImpl.java

@@ -956,6 +956,14 @@ public abstract class PermanentImpl extends CardImpl implements Permanent {
                 }
             }
 
+            if (abilities.containsKey(HexproofFromMonocoloredAbility.getInstance().getId())) {
+                if (game.getPlayer(this.getControllerId()).hasOpponent(sourceControllerId, game)
+                        && null == game.getContinuousEffects().asThough(this.getId(), AsThoughEffectType.HEXPROOF, null, sourceControllerId, game)
+                        && !source.getColor(game).isColorless() && !source.getColor(game).isMulticolored()) {
+                    return false;
+                }
+            }
+
             if (hasProtectionFrom(source, game)) {
                 return false;
             }