replace groovy code with ability in card script

release/Magarena/scripts/Withstand_Death.groovy

@@ -1,23 +0,0 @@
-[
-    new MagicSpellCardEvent() {
-        @Override
-        public MagicEvent getEvent(final MagicCardOnStack cardOnStack,final MagicPayedCost payedCost) {
-            return new MagicEvent(
-                cardOnStack,
-                MagicTargetChoice.POS_TARGET_CREATURE,
-                MagicIndestructibleTargetPicker.create(),
-                this,
-                "Target creature\$ gains indestructible until end of turn."
-            );
-        }
-
-        @Override
-        public void executeEvent(final MagicGame game, final MagicEvent event) {
-            event.processTargetPermanent(game,new MagicPermanentAction() {
-                public void doAction(final MagicPermanent creature) {
-                    game.doAction(new MagicGainAbilityAction(creature,MagicAbility.Indestructible));
-                }
-            });
-        }
-    }
-]

release/Magarena/scripts/Withstand_Death.txt

@@ -5,5 +5,5 @@ value=3.331
 rarity=C
 type=Instant
 cost={G}
+effect=Target creature gains indestructible until end of turn.
 timing=pump
-requires_groovy_code