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/src/main/java/forge/player/PlayerControllerHuman.java

@@ -1569,18 +1569,6 @@ public class PlayerControllerHuman extends PlayerController implements IGameCont
         }
     }
 
-    @Override
-    public CardShields chooseRegenerationShield(final Card c) {
-        if (c.getShieldCount() < 2) {
-            return Iterables.getFirst(c.getShields(), null);
-        }
-        final List<CardShields> shields = Lists.newArrayList();
-        for (final CardShields shield : c.getShields()) {
-            shields.add(shield);
-        }
-        return getGui().one("Choose a regeneration shield:", shields);
-    }
-
     @Override
     public List<PaperCard> chooseCardsYouWonToAddToDeck(final List<PaperCard> losses) {
         return getGui().many("Select cards to add to your deck", "Add these to my deck", 0, losses.size(), losses,