At last, time to show this which I keep it for a looooooong time ago until I finally use this pose for something XD
Nothing much to talk about this technique of his. He take out his sword, make two slashes that created an "X" on the ground, stab his sword closeby to the mark and unleash a tower of fire from the X

Here some battle theme which inspired me this: https://www.youtube.com/watch?v=zI5rrFORcEs

Orion: Let my rage burn you into ashes... X Eruption!