Sinocrassula yunnanensis cristata
The regular version of this plant is already a weirdo, and here is a mutated version! These grow a tall flat stem sprinkled with leaves, with a dense line of leaves at the top. These are a little more delicate than the regular version too, needing a little more protection from sun to keep that exposed stem safe. Don't leave them dry for too long.
Current batch is LAST 2 pics. These are smaller.