replace groovy code with effect in card script

release/Magarena/scripts/Sift.groovy

@@ -1,18 +0,0 @@
-[
-    new MagicSpellCardEvent() {
-        @Override
-        public MagicEvent getEvent(final MagicCardOnStack cardOnStack,final MagicPayedCost payedCost) {
-            return new MagicEvent(
-                cardOnStack,
-                this,
-                "Draw three cards, then discard a card."
-            );
-        }
-        @Override
-        public void executeEvent(final MagicGame game, final MagicEvent event) {
-            final MagicPlayer player=event.getPlayer();
-            game.doAction(new MagicDrawAction(player,3));
-            game.addEvent(new MagicDiscardEvent(event.getSource(),player));
-        }
-    }
-]

release/Magarena/scripts/Sift.txt

@@ -5,5 +5,5 @@ value=3.295
 rarity=C
 type=Sorcery
 cost={3}{U}
+effect=PN draws three cards, then discards a card.
 timing=draw
-requires_groovy_code