| WHAT THE HECK IS THAT?!
The naming of the page, "Triquetra Attack", has not been confirmed by official sources.
By performing a soul resonance with Franken Stein whilst already conducting Lightning Rope with him, Marie's tonfa-like weapon form distorts dramatically, instead becoming two intertwining beams of energy that emanate from a single triquetra symbol. When this symbol collides with a target, it greatly enlarges and results in a powerful destructive blast, which is represented by numerous towering and intertwined pillars of electricity.
There's also a variation of this move in which only the lightning itself is emitted from the triquetra symbol. It's performed by a simple swing.