- Added the cost "OppGainLife".

- Added Reverent Silence.

.gitattributes

@@ -6151,6 +6151,7 @@ res/cardsfolder/r/reverberate.txt svneol=native#text/plain
 res/cardsfolder/r/revered_dead.txt svneol=native#text/plain
 res/cardsfolder/r/revered_elder.txt svneol=native#text/plain
 res/cardsfolder/r/reverence.txt svneol=native#text/plain
+res/cardsfolder/r/reverent_silence.txt -text
 res/cardsfolder/r/revive.txt svneol=native#text/plain
 res/cardsfolder/r/revive_the_fallen.txt svneol=native#text/plain
 res/cardsfolder/r/reviving_dose.txt svneol=native#text/plain
@@ -9657,6 +9658,7 @@ src/main/java/forge/card/cardFactory/package-info.java svneol=native#text/plain
 src/main/java/forge/card/cost/Cost.java svneol=native#text/plain
 src/main/java/forge/card/cost/CostDiscard.java -text
 src/main/java/forge/card/cost/CostExile.java -text
+src/main/java/forge/card/cost/CostGainLife.java -text
 src/main/java/forge/card/cost/CostMana.java -text
 src/main/java/forge/card/cost/CostMill.java -text
 src/main/java/forge/card/cost/CostPart.java -text

res/cardsfolder/r/reverent_silence.txt

@@ -0,0 +1,9 @@
+Name:Reverent Silence
+ManaCost:3 G
+Types:Sorcery
+Text:no text
+A:SP$ DestroyAll | Cost$ 3 G | ValidCards$ Enchantment | SpellDescription$ Destroy all enchantments.
+A:SP$ DestroyAll | Cost$ OppGainLife<6> | ValidCards$ Enchantment | IsPresent$ Forest.YouCtrl | PrecostDesc$ If you control a Forest, rather than pay CARDNAME's mana cost, | CostDesc$ you may have each other player gain 6 life | SpellDescription$ . 
+SVar:Rarity:Common
+SVar:Picture:http://www.wizards.com/global/images/magic/general/reverent_silence.jpg
+End

src/main/java/forge/card/cost/Cost.java

@@ -91,6 +91,7 @@ public class Cost {
     private final static String subStr = "SubCounter<";
     private final static String addStr = "AddCounter<";
     private final static String lifeStr = "PayLife<";
+    private final static String lifeGainStr = "OppGainLife<";
     private final static String millStr = "Mill<";
     private final static String discStr = "Discard<";
     private final static String sacStr = "Sac<";
@@ -149,6 +150,14 @@ public class Cost {
 
             costParts.add(new CostPayLife(splitStr[0]));
         }
+        
+        while (parse.contains(lifeGainStr)) {
+            // PayLife<LifeCost>
+            String[] splitStr = abCostParse(parse, lifeGainStr, 1);
+            parse = abUpdateParse(parse, lifeGainStr);
+
+            costParts.add(new CostGainLife(splitStr[0]));
+        }
 
         while (parse.contains(millStr)) {
             // PayLife<LifeCost>

src/main/java/forge/card/cost/CostGainLife.java

@@ -0,0 +1,106 @@
+package forge.card.cost;
+
+import forge.AllZone;
+import forge.Card;
+import forge.GameActionUtil;
+import forge.Player;
+import forge.card.abilityFactory.AbilityFactory;
+import forge.card.spellability.SpellAbility;
+
+public class CostGainLife extends CostPart {
+    private int lastPaidAmount = 0;
+
+    public int getLastPaidAmount(){
+        return lastPaidAmount;
+    }
+    
+    public void setLastPaidAmount(int paidAmount){
+    	lastPaidAmount = paidAmount;
+    }
+    
+    public CostGainLife(String amount){
+    	this.amount = amount;
+    }
+
+	@Override
+	public String toString() {
+		StringBuilder sb = new StringBuilder();
+		sb.append("Have each other player gain ").append(amount).append(" Life");
+		return sb.toString();
+	}
+
+	@Override
+	public void refund(Card source) {
+
+	}
+
+    @Override
+    public boolean canPay(SpellAbility ability, Card source, Player activator, Cost cost) {
+        Integer amount = convertAmount();
+        if (amount != null && !activator.getOpponent().canGainLife()) {
+            return false;
+        }
+
+        return true;
+    }
+
+    @Override
+    public void payAI(SpellAbility ability, Card source, Cost_Payment payment) {
+        AllZone.getHumanPlayer().gainLife(getLastPaidAmount(), null);
+    }
+
+    @Override
+    public boolean payHuman(SpellAbility ability, Card source, Cost_Payment payment) {
+        String amount = getAmount();
+        Player activator = ability.getActivatingPlayer();
+        int life = activator.getLife();
+        
+        Integer c = convertAmount();
+        if (c == null){
+            String sVar = source.getSVar(amount);
+            // Generalize this
+            if (sVar.equals("XChoice")){
+                c = CostUtil.chooseXValue(source, life);
+            }
+            else{
+                c = AbilityFactory.calculateAmount(source, amount, ability);
+            }
+        }
+        
+        StringBuilder sb = new StringBuilder();
+        sb.append(source.getName()).append(" - Have each other player gain ").append(c).append(" Life?");
+        
+        if (GameActionUtil.showYesNoDialog(source, sb.toString()) && activator.getOpponent().canGainLife()) {
+            activator.getOpponent().gainLife(c, null);
+            setLastPaidAmount(c);
+            payment.setPaidManaPart(this, true);
+        } else {
+            payment.setCancel(true);
+            payment.getRequirements().finishPaying();
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public boolean decideAIPayment(SpellAbility ability, Card source, Cost_Payment payment) {
+        Player activator = ability.getActivatingPlayer();
+
+        Integer c = convertAmount();
+        if (c == null){
+            String sVar = source.getSVar(amount);
+            // Generalize this
+            if (sVar.equals("XChoice")){
+                return false;
+            }
+            else{
+                c = AbilityFactory.calculateAmount(source, amount, ability);
+            }
+        }
+        if (!activator.getOpponent().canGainLife()){
+            return false;
+        }
+        setLastPaidAmount(c);
+        return true;
+    }
+}