diff --git a/Mage.Sets/src/mage/sets/gatecrash/BiomassMutation.java b/Mage.Sets/src/mage/sets/gatecrash/BiomassMutation.java
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+++ b/Mage.Sets/src/mage/sets/gatecrash/BiomassMutation.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.gatecrash;
+
+import java.util.UUID;
+import mage.Constants;
+import mage.Constants.CardType;
+import mage.Constants.Rarity;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.dynamicvalue.common.GetXValue;
+import mage.abilities.dynamicvalue.common.ManacostVariableValue;
+import mage.abilities.effects.common.continious.SetPowerToughnessAllEffect;
+import mage.cards.CardImpl;
+import mage.filter.common.FilterControlledCreaturePermanent;
+
+/**
+ *
+ * @author LevelX2
+ */
+public class BiomassMutation extends CardImpl<BiomassMutation> {
+
+    public BiomassMutation(UUID ownerId) {
+        super(ownerId, 215, "Biomass Mutation", Rarity.RARE, new CardType[]{CardType.INSTANT}, "{X}{G/U}{G/U}");
+        this.expansionSetCode = "GTC";
+
+        this.color.setGreen(true);
+        this.color.setBlue(true);
+
+        // Creatures you control become X/X until end of turn.
+        DynamicValue variableMana = new ManacostVariableValue();
+        this.getSpellAbility().addEffect(new SetPowerToughnessAllEffect(variableMana, variableMana, Constants.Duration.EndOfTurn, new FilterControlledCreaturePermanent("Creatures you control"), true));
+    }
+
+    public BiomassMutation(final BiomassMutation card) {
+        super(card);
+    }
+
+    @Override
+    public BiomassMutation copy() {
+        return new BiomassMutation(this);
+    }
+}