diff --git a/Mage.Sets/src/mage/sets/shadowmoor/KnollspineInvocation.java b/Mage.Sets/src/mage/sets/shadowmoor/KnollspineInvocation.java
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+/*
+ *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without modification, are
+ *  permitted provided that the following conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *     2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are those of the
+ *  authors and should not be interpreted as representing official policies, either expressed
+ *  or implied, of BetaSteward_at_googlemail.com.
+ */
+package mage.sets.shadowmoor;
+
+import java.util.UUID;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.DiscardCardCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.CardImpl;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.Rarity;
+import mage.constants.Zone;
+import mage.filter.Filter;
+import mage.filter.FilterCard;
+import mage.filter.common.FilterOwnedCard;
+import mage.filter.predicate.mageobject.ConvertedManaCostPredicate;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.common.TargetCreatureOrPlayer;
+
+/**
+ *
+ * @author anonymous
+ */
+public class KnollspineInvocation extends CardImpl {
+
+    public KnollspineInvocation(UUID ownerId) {
+        super(ownerId, 99, "Knollspine Invocation", Rarity.RARE, new CardType[]{CardType.ENCHANTMENT}, "{1}{R}{R}");
+        this.expansionSetCode = "SHM";
+
+        // {X}, Discard a card with converted mana cost X: Knollspine Invocation deals X damage to target creature or player.
+        Ability ability = new KnollspineInvocationAbility();
+        ability.addTarget(new TargetCreatureOrPlayer());
+        this.addAbility(ability);
+    }
+
+    public KnollspineInvocation(final KnollspineInvocation card) {
+        super(card);
+    }
+
+    @Override
+    public KnollspineInvocation copy() {
+        return new KnollspineInvocation(this);
+    }
+}
+
+class KnollspineInvocationAbility extends SimpleActivatedAbility {
+    public KnollspineInvocationAbility() {
+        super(Zone.BATTLEFIELD, new KnollspineInvocationEffect(), new ManaCostsImpl("{0}"));
+        //If cost gets added by ManaCostsImpl.add from ActivatedAbilityImpl constructor, this will destroy our custom mana cost
+        //Here comes the hack
+        //A less hacky solution would be to implement this as a ManaCost proper, 
+        //using ManaCostImpl (but it would involve duplicating code from ManaCostsImpl
+        //and, of course, it would deny access to ManaCostsImpl's API)
+        this.manaCosts = new KnollspineInvocationAbilityCost("{X}");
+        this.manaCostsToPay = this.manaCosts.copy();
+    }
+}
+
+class KnollspineInvocationEffect extends OneShotEffect {
+    //See DrainLife for this class' implementation
+
+    public KnollspineInvocationEffect() {
+        super(Outcome.Damage);
+        staticText = "Knollspine Invocation deals X damage to target creature or player";
+    }
+
+    public KnollspineInvocationEffect(final KnollspineInvocationEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        int amount = source.getManaCostsToPay().getX();
+        if (amount > 0) {            
+            Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
+            if (permanent != null ) {
+                permanent.damage(amount, source.getSourceId(), game, false, true);
+            } else {
+                Player player = game.getPlayer(getTargetPointer().getFirst(game, source));
+                if (player != null) {
+                    player.damage(amount, source.getSourceId(), game, false, true);
+                } else {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public KnollspineInvocationEffect copy() {
+        return new KnollspineInvocationEffect(this);
+    }
+}
+
+class KnollspineInvocationAbilityCost extends ManaCostsImpl {
+    protected DiscardCardCost additional;
+    
+    public KnollspineInvocationAbilityCost(final KnollspineInvocationAbilityCost cost) {
+        super(cost);
+        this.additional = cost.additional;
+    }
+    
+    public KnollspineInvocationAbilityCost (String s) {
+        super(s);
+        //we can only apply the additional discard cost AFTER we resolve this one!
+        FilterCard filter = new FilterOwnedCard("a card with converted mana cost " + super.getText());
+        filter.add(new ConvertedManaCostPredicate(Filter.ComparisonType.Equal, super.getX()));
+        additional = new DiscardCardCost(filter);
+    }
+    
+    @Override
+    public KnollspineInvocationAbilityCost copy() {
+        return new KnollspineInvocationAbilityCost(this);
+    }
+    
+    @Override
+    public boolean pay(Ability ability, Game game, UUID sourceId, UUID controllerId, boolean noMana) {
+        if (super.pay(ability, game, sourceId, controllerId, noMana)) {
+            //Now we get the real deal
+            FilterCard filter = new FilterOwnedCard("a card with converted mana cost " + this.getX());
+            filter.add(new ConvertedManaCostPredicate(Filter.ComparisonType.Equal, this.getX()));
+            return new DiscardCardCost(filter).pay(ability, game, sourceId, controllerId, noMana);
+        }
+        return false;
+    }
+    
+    @Override
+    public String getText() {
+        StringBuilder sb = new StringBuilder(super.getText());
+        sb.append(", ");
+        sb.append(additional.getText());
+        System.out.println("Knollspine Invocation tooltip: " + sb.toString());
+        return sb.toString();
+    }
+}
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