* Started adding the new colorless mana {C}. Not finished yet but the exception is removed.

Mage/src/main/java/mage/abilities/costs/mana/ColorlessManaCost.java

@@ -0,0 +1,110 @@
+/*
+ *  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.abilities.costs.mana;
+
+import mage.Mana;
+import mage.abilities.Ability;
+import mage.constants.ColoredManaSymbol;
+import mage.game.Game;
+import mage.players.ManaPool;
+
+/**
+ *
+ * @author LevelX2
+ */
+public class ColorlessManaCost extends ManaCostImpl {
+
+    protected int mana;
+
+    public ColorlessManaCost(int mana) {
+        this.mana = mana;
+        this.cost = Mana.ColorlessMana(mana);
+        this.options.addMana(Mana.ColorlessMana(mana));
+    }
+
+    public ColorlessManaCost(ColorlessManaCost manaCost) {
+        super(manaCost);
+        this.mana = manaCost.mana;
+    }
+
+    public void setMana(int mana) {
+        this.mana = mana;
+    }
+
+    @Override
+    public int convertedManaCost() {
+        return mana;
+    }
+
+    @Override
+    public boolean isPaid() {
+        if (paid) {
+            return true;
+        }
+        return this.isColorlessPaid(mana);
+    }
+
+    @Override
+    public void assignPayment(Game game, Ability ability, ManaPool pool) {
+        this.assignColorless(ability, game, pool, mana);
+    }
+
+    @Override
+    public String getText() {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < mana; i++) {
+            sb.append("{C}");
+        }
+        return sb.toString();
+    }
+
+    @Override
+    public ColorlessManaCost getUnpaid() {
+        ColorlessManaCost unpaid = new ColorlessManaCost(mana - this.payment.count());
+        if (sourceFilter != null) {
+            unpaid.setSourceFilter(sourceFilter);
+        }
+        return unpaid;
+    }
+
+    @Override
+    public boolean testPay(Mana testMana) {
+        return testMana.getColorless() > 0;
+    }
+
+    @Override
+    public ColorlessManaCost copy() {
+        return new ColorlessManaCost(this);
+    }
+
+    @Override
+    public boolean containsColor(ColoredManaSymbol coloredManaSymbol) {
+        return false;
+    }
+
+}

Mage/src/main/java/mage/abilities/costs/mana/ManaCostsImpl.java

@@ -315,13 +315,14 @@ public class ManaCostsImpl<T extends ManaCost> extends ArrayList<T> implements M
                 if (symbol.length() > 0) {
                     if (symbol.length() == 1 || isNumeric(symbol)) {
                         if (Character.isDigit(symbol.charAt(0))) {
-                            this.add((T) new GenericManaCost(Integer.valueOf(symbol)));
+                            this.add(new GenericManaCost(Integer.valueOf(symbol)));
                         } else {
-                            if(symbol.equals("S")) {
-                                this.add((T) new SnowManaCost());
-                            }
-                            else if (!symbol.equals("X")) {
-                                this.add((T) new ColoredManaCost(ColoredManaSymbol.lookup(symbol.charAt(0))));
+                            if (symbol.equals("S")) {
+                                this.add(new SnowManaCost());
+                            } else if (symbol.equals("C")) {
+                                this.add(new ColorlessManaCost(1));
+                            } else if (!symbol.equals("X")) {
+                                this.add(new ColoredManaCost(ColoredManaSymbol.lookup(symbol.charAt(0))));
                             } else {
                                 // check X wasn't added before
                                 if (modifierForX == 0) {
@@ -331,7 +332,7 @@ public class ManaCostsImpl<T extends ManaCost> extends ArrayList<T> implements M
                                             modifierForX++;
                                         }
                                     }
-                                    this.add((T) new VariableManaCost(modifierForX));
+                                    this.add(new VariableManaCost(modifierForX));
                                 }
                             }
                             //TODO: handle multiple {X} and/or {Y} symbols