list.size > 0 changed to !list.isEmpty

We care about if it's empty or not, not about it's size

Mage/src/main/java/mage/abilities/effects/common/DrawCardSourceControllerEffect.java

@@ -83,7 +83,7 @@ public class DrawCardSourceControllerEffect extends OneShotEffect {
             sb.append('s');
         }
         String message = amount.getMessage();
-        if (message.length() > 0) {
+        if (!message.isEmpty()) {
             sb.append(" for each ");
         }
         sb.append(message);