From 30537101097c7ee4d430eaa406cc8d0e72baa105 Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Sat, 18 Nov 2017 22:17:44 -0500
Subject: [PATCH] fixed Root Sliver ability only effecting its controller

---
 Mage.Sets/src/mage/cards/r/RootSliver.java | 58 +++++++++++++++++++---
 1 file changed, 51 insertions(+), 7 deletions(-)

diff --git a/Mage.Sets/src/mage/cards/r/RootSliver.java b/Mage.Sets/src/mage/cards/r/RootSliver.java
index 92a181ed9e..facf6a51ff 100644
--- a/Mage.Sets/src/mage/cards/r/RootSliver.java
+++ b/Mage.Sets/src/mage/cards/r/RootSliver.java
@@ -29,34 +29,39 @@ package mage.cards.r;
 
 import java.util.UUID;
 import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.Ability;
 import mage.abilities.common.SimpleStaticAbility;
-import mage.abilities.effects.common.CantBeCounteredControlledEffect;
+import mage.abilities.effects.ContinuousRuleModifyingEffectImpl;
 import mage.abilities.effects.common.CantBeCounteredSourceEffect;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
 import mage.constants.CardType;
 import mage.constants.Duration;
+import mage.constants.Outcome;
 import mage.constants.SubType;
 import mage.constants.Zone;
 import mage.filter.FilterSpell;
-import mage.filter.FilterStackObject;
 import mage.filter.predicate.mageobject.SubtypePredicate;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.stack.Spell;
+import mage.game.stack.StackObject;
 
 /**
  *
  * @author cbt33, BetaSteward (Autumn's Veil, Combust)
  */
 public class RootSliver extends CardImpl {
-    
+
     private static final FilterSpell filter = new FilterSpell("Sliver spells");
-    
+
     static {
         filter.add(new SubtypePredicate(SubType.SLIVER));
     }
-    
 
     public RootSliver(UUID ownerId, CardSetInfo setInfo) {
-        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{3}{G}");
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{G}");
         this.subtype.add(SubType.SLIVER);
 
         this.power = new MageInt(2);
@@ -65,7 +70,7 @@ public class RootSliver extends CardImpl {
         // Root Sliver can't be countered.
         this.addAbility(new SimpleStaticAbility(Zone.STACK, new CantBeCounteredSourceEffect()));
         // Sliver spells can't be countered by spells or abilities.
-        this.addAbility(new SimpleStaticAbility(Zone.STACK, new CantBeCounteredControlledEffect(filter, new FilterStackObject(), Duration.WhileOnBattlefield)));
+        this.addAbility(new SimpleStaticAbility(Zone.STACK, new RootSliverEffect()));
 
     }
 
@@ -79,3 +84,42 @@ public class RootSliver extends CardImpl {
     }
 }
 
+class RootSliverEffect extends ContinuousRuleModifyingEffectImpl {
+
+    public RootSliverEffect() {
+        super(Duration.WhileOnBattlefield, Outcome.Benefit);
+        staticText = "Sliver spells can't be countered by spells or abilities.";
+    }
+
+    public RootSliverEffect(final RootSliverEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public RootSliverEffect copy() {
+        return new RootSliverEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return true;
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.COUNTER;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        Spell spell = game.getStack().getSpell(event.getTargetId());
+        if (spell != null && spell.hasSubtype(SubType.SLIVER, game)) {
+            MageObject sourceObject = game.getObject(event.getSourceId());
+            if (sourceObject != null && sourceObject instanceof StackObject) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}