Cross Full Moon Shadow is a technique that uses the unpredictability of shadows to launch a cross-shaped energy attack. The user, after using Fifth Shadow: September Shadow, allows the attack to mutate causing the energy to transform into the shape of a giant cross where it is then used to attack with.
This technique is claimed to be impossible to dodge, however it can be immobilized directly, although it's due to Thorn power boost that allowed Baam to stop the attack.[1]