- The AI will no longer sacrifice the sourcecard of a GainLife ability unless it has 5 or less life.

src/main/java/forge/card/abilityfactory/AbilityFactoryAlterLife.java

@@ -326,7 +326,7 @@ public class AbilityFactoryAlterLife {
         }
 
         if (abCost != null && life > 5) {
-            if (!CostUtil.checkSacrificeCost(abCost, source)) {
+            if (!CostUtil.checkSacrificeCost(abCost, source, false)) {
                 return false;
             }
 
@@ -348,7 +348,8 @@ public class AbilityFactoryAlterLife {
         }
 
         // Don't use lifegain before main 2 if possible
-        if (Singletons.getModel().getGameState().getPhaseHandler().getPhase().isBefore(PhaseType.MAIN2) && !params.containsKey("ActivationPhases")) {
+        if (Singletons.getModel().getGameState().getPhaseHandler().getPhase().isBefore(PhaseType.MAIN2) 
+                && !params.containsKey("ActivationPhases")) {
             return false;
         }
 

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

@@ -47,6 +47,21 @@ public class CostUtil {
      * @return true, if successful
      */
     public static boolean checkSacrificeCost(final Cost cost, final Card source) {
+        return checkSacrificeCost(cost, source, true);
+    }
+
+    /**
+     * Check sacrifice cost.
+     * 
+     * @param cost
+     *            the cost
+     * @param source
+     *            the source
+     * @param important
+     *            is the gain important enough?
+     * @return true, if successful
+     */
+    public static boolean checkSacrificeCost(final Cost cost, final Card source, final boolean important) {
         if (cost == null) {
             return true;
         }
@@ -57,6 +72,9 @@ public class CostUtil {
                 final String type = sac.getType();
 
                 if (type.equals("CARDNAME")) {
+                    if (!important) {
+                        return false;
+                    }
                     CardList auras = new CardList(source.getEnchantedBy());
                     if (!auras.getController(source.getController()).isEmpty()) {
                         return false;