User blog comment:SirAston/URF and the LoL Engine - A To-Do List/@comment-5561377-20140407093335/@comment-5331854-20140407095720

URF Crystallize has a CD of 5 and is up for 5 seconds. You MAY be able to cast it within a melting Crystallize, but otherwise, there's not really a chance to test the whackiness of that.