Laval Lakeside Lady (HA06-EN034) - Hidden Arsenal 6: Omega Xyz Unlimited

If this card is in your Graveyard and you have 3 or more "Laval" monsters with different names in your Graveyard: You can banish this card and 1 other "Laval" monster from your Graveyard to target 1 Set card your opponent controls; destroy that target.