well swiftcasxt wouldn't causer a lock, as I mean to pre-cast it before a fight. That way when you run in, you automatically veraero/thunder while weaving your off GCD's in between. It feels smoother than timing the first cast as a hardcasted veraero on the mob, because that all depends on the tank pulling it, where as precasting with using vercure, you can take your time easier while running up with two spells you are instacasting on the boss and immediately following up with your procs.