OLL 14
Knight move shapes; comes up 1 in 54 solves.
Algorithms
R' F R U R' F' R F U' F'reads as Slam · U · Slam (reverse) · F U' F'r U R' U' r' F R2 U R' U' F'l' U l U l' U' l F U' F'S R U R' U' R' F R2 U R' U' f'reads as S · Righty · Axe · U R' U' f'