Shakugan no Shana II (Second) EP21 - Combined Strength

Wilhelmina struggles against Sabrac who appears to be invincible. Yuji gathers Shana, Margery, Kazumi and Keisaku, and devises a plan to defeat Sabrac. They are successful in severing his energy reserves while Wilhelmina distracts him, and without Power of Existence to draw on, Sabrac loses two more swords and finally falls to Nietono no Shana.