dies triggers improves:

* tests: added additional tests and verify/runtime checks for wrong die trigger settings;
* refactor: removed some usage of short LKI ;
* fixed dies events support in "or trigger" and "conditional trigger" (use cases like sacrifice cost);
* fixed dies events support in shared triggered abilities (use cases like sacrifice cost);

Mage/src/main/java/mage/abilities/common/DiesCreatureTriggeredAbility.java

@@ -48,6 +48,7 @@ public class DiesCreatureTriggeredAbility extends TriggeredAbilityImpl {
         super(zone, effect, optional);
         this.filter = filter;
         this.setTargetPointer = setTargetPointer;
+        setLeavesTheBattlefieldTrigger(true);
         setTriggerPhrase("Whenever " + filter.getMessage() + (filter.getMessage().startsWith("one or more") ? " die, " : " dies, "));
     }