if ( player != null ) {
ReturnToHandTargetCost attackCost = new ReturnToHandTargetCost(new TargetControlledPermanent(filter));
if ( attackCost.canPay(source, source.getSourceId(), event.getPlayerId(), game) &&
player.chooseUse(Outcome.Neutral, "Return an enchantment you control to hand to attack?", game) )
{
if (attackCost.pay(source, game, source.getSourceId(), event.getPlayerId(), true) ) {
return false;
}
}
return true;
}