Regeneration Rework:

- Regenerate or RegenerateAll does create an Effect
in Command which does replace Destroy if possible
- Trigger Regenerated will be added to the Effect
if something does care about "regenerated that way"
- new Regeneration Api is the internal effect
that does handle the actual regeneration
- ReplaceDestroy has Section to handle if Regeneration is possible
- CardShields are removed with the option in PlayerController

forge-gui-desktop/src/test/java/forge/gamesimulationtests/util/PlayerControllerForTests.java

@@ -566,11 +566,6 @@ public class PlayerControllerForTests extends PlayerController {
         // test this!
     }
 
-    @Override
-    public CardShields chooseRegenerationShield(Card c) {
-        return Iterables.getFirst(c.getShields(), null);
-    }
-
     @Override
     public List<PaperCard> chooseCardsYouWonToAddToDeck(List<PaperCard> losses) {
         // TODO Auto-generated method stub