Fortress of Impalement

Fortress of Impalement (串刺城塞, Kushiza Jōsai) is a high-level technique created in response to its sister counterpart — Sword Birth; it's said that when the two clash, they cancel each other out due to sharing the same mechanics.

One thing known about this technique is that it was created shortly after Sword Birth, made compatible with any pole-based weaponry. It's considered to be one of the most sought after techniques of many polearms wielders, having the power to eliminate various opponents at once while putting them on the same playing field as any other high-level swordsman.

There are only a few masters of this technique, most of them known to be excellent fighters in their own right.

Trivia

 * This technique is based on Lancer of Black's Noble Phantasm, Kazliki Bey from the light novel series, Fate/Apocrypha.