Millón Escudo

is a Kidō spell. It was the technique used by Sōsuke Aizen to block an attempted sneak attack by Ichigo Kurosaki during the battle over Fake Karakura Town. While both the number and classification of this particular spell is not expressly stated, it most resembles a bakudō (binding) spell.

Description
The technique can be cast to protect a certain area of the body and triggers when an incoming attack hits the barrier that is in place. When it is triggered, a light green, hexagonal barrier appears and disperses the incoming attack. It is powerful enough to block a point-blank attack with a black Getsuga Tenshō.

Incantation
Unknown

Known Practitioners

 * Sōsuke Aizen