Nothing

Alex was surprised when he realized that he only knew 2 Sword techniques that did more than just slashing.

They were the Heavenly Sword Slash and the Bursting Blaze.

He had many other sword techniques such as Penta-Sword Strike, 75 Sword Array, and a few others, but they either used more than one sword or didn't truly require a sword for the technique.

As such he only had 2 strikes that were more than just regular slashes.

One created a lightning strike, and the other created an explosion.

Given he had so little, Alex wanted to create a sword technique that was quite versatile so that he didn't have to worry about missing out.

After thinking for a while, he landed on something.

Instead of making a specific sword technique that tried to include everything, he decided to make a sword technique that could include everything as they were required.

After that, he came across another problem. What type of sword technique should he make?