I've never seen this stitch before! Only 2 rows and such beauty! Crochet Pattern. Crochet Stitch!

???? TIMESTAMPS - jump to the section you need immediately! 00:00 Hook and Yarn! 00:12 Pattern start 01:24 Row 1 03:13 Row 2 05:26 Row 3 ( Repeat Row 1 ) 07:52 Row 4 ( Repeat Row 2 ) 08:52 Row 5 ( Repeat Row 1 ) 11:07 Crochet Stitch ????!