diff --git a/forge-ai/src/main/java/forge/ai/AiController.java b/forge-ai/src/main/java/forge/ai/AiController.java
index edab1ee7792..0228faf5a05 100644
--- a/forge-ai/src/main/java/forge/ai/AiController.java
+++ b/forge-ai/src/main/java/forge/ai/AiController.java
@@ -1046,17 +1046,32 @@ public class AiController {
                     numLandsAvailable++;
                 }
 
-                //Discard unplayable card
+                // Discard unplayable card
                 boolean discardedUnplayable = false;
-                for (int j = 0; j < validCards.size(); j++) {
-                    if (validCards.get(j).getCMC() > numLandsAvailable && !validCards.get(j).hasSVar("DoNotDiscardIfAble")) {
-                        discardList.add(validCards.get(j));
-                        validCards.remove(validCards.get(j));
-                        discardedUnplayable = true;
-                        break;
-                    } else if (validCards.get(j).getCMC() <= numLandsAvailable) {
-                        // cut short to avoid looping over cards which are guaranteed not to fit the criteria
-                        break;
+                // But check if there is a card in play that allows casting spells for free!
+                // if yes, nothing is unplayable, at least based on CMC
+                boolean dreamHalls = false;
+                for (Card cardInPlay : game.getCardsIn(ZoneType.Battlefield)) {
+                    if (cardInPlay.hasSVar("AllowFreeCast")) {
+                        if ("Everyone".equals((cardInPlay.getSVar("AllowFreeCast")))) {
+                            dreamHalls = true;
+                        } else if (("Owner".equals((cardInPlay.getSVar("AllowFreeCast"))))
+                                && (cardInPlay.getOwner().equals(player))) {
+                            dreamHalls = true;
+                        }
+                    }
+                }
+                if (!dreamHalls) {
+                    for (int j = 0; j < validCards.size(); j++) {
+                        if (validCards.get(j).getCMC() > numLandsAvailable && !validCards.get(j).hasSVar("DoNotDiscardIfAble")) {
+                            discardList.add(validCards.get(j));
+                            validCards.remove(validCards.get(j));
+                            discardedUnplayable = true;
+                            break;
+                        } else if (validCards.get(j).getCMC() <= numLandsAvailable) {
+                            // cut short to avoid looping over cards which are guaranteed not to fit the criteria
+                            break;
+                        }
                     }
                 }
 
diff --git a/forge-ai/src/main/java/forge/ai/AiCostDecision.java b/forge-ai/src/main/java/forge/ai/AiCostDecision.java
index 4c538e5d4d3..68bc9e5f1c8 100644
--- a/forge-ai/src/main/java/forge/ai/AiCostDecision.java
+++ b/forge-ai/src/main/java/forge/ai/AiCostDecision.java
@@ -65,6 +65,20 @@ public class AiCostDecision extends CostDecisionMakerBase {
         final String type = cost.getType();
         CardCollectionView hand = player.getCardsIn(ZoneType.Hand);
 
+/*        // Dream Halls
+        if (type.equals("Card.SharesColorWith")) {
+        Card bestfound= null;
+        for (Card card : hand) {
+            if ((card.sharesColorWith(source))
+                && (!card.equals(source))) {
+            if (bestfound==null) { bestfound=card; }
+            if (card.getCMC()<bestfound.getCMC())  { bestfound=card; }
+            }
+        }
+        if (bestfound==null) { return null; } else
+        { return PaymentDecision.card(bestfound); }
+        } else */
+
         if (type.equals("LastDrawn")) {
             if (!hand.contains(player.getLastDrawnCard())) {
                 return null;
diff --git a/forge-gui/res/cardsfolder/d/dream_halls.txt b/forge-gui/res/cardsfolder/d/dream_halls.txt
index 090772353b7..2e176e48502 100644
--- a/forge-gui/res/cardsfolder/d/dream_halls.txt
+++ b/forge-gui/res/cardsfolder/d/dream_halls.txt
@@ -4,5 +4,6 @@ Types:Enchantment
 S:Mode$ Continuous | Affected$ Card.nonToken | AddKeyword$ Alternative Cost:Discard<1/Card.SharesColorWith/color sharing> | AffectedZone$ Hand,Graveyard,Exile,Library,Command | Description$ Rather than pay the mana cost for a spell, its controller may discard a card that shares a color with that spell.
 SVar:NonStackingEffect:True
 AI:RemoveDeck:Random
+SVar:AllowFreeCast:Everyone
 SVar:Picture:http://www.wizards.com/global/images/magic/general/dream_halls.jpg
 Oracle:Rather than pay the mana cost for a spell, its controller may discard a card that shares a color with that spell.
diff --git a/forge-gui/res/cardsfolder/o/omniscience.txt b/forge-gui/res/cardsfolder/o/omniscience.txt
index dcbed941b4f..0b308bd636e 100644
--- a/forge-gui/res/cardsfolder/o/omniscience.txt
+++ b/forge-gui/res/cardsfolder/o/omniscience.txt
@@ -2,6 +2,7 @@ Name:Omniscience
 ManaCost:7 U U U
 Types:Enchantment
 S:Mode$ Continuous | Affected$ Card.nonLand+YouOwn | MayPlay$ True | MayPlayWithoutManaCost$ True | AffectedZone$ Hand | Description$ You may cast spells from your hand without paying their mana costs.
+SVar:AllowFreeCast:Owner
 AI:RemoveDeck:Random
 SVar:Picture:http://www.wizards.com/global/images/magic/general/omniscience.jpg
 Oracle:You may cast spells from your hand without paying their mana costs.