Sea God Slash

Union Magic: Sea God Invocation (合体魔法『海神降ろし』) is a song- and butoh-based Union Magic spell.

Description
The spell is activated when two users are able to cast a song and butoh magic spell concurrently. Usually two mages are required to activate this spell where each of them would use a spell and combined them afterwards. When activated one mage would sing to increase the abilities of the other mage, while the dancing mage would attack with attacks powerful enough to produce shockwaves.

Kiato and Kahono have revealed that this spell was born from their environment for they would worship their god by singing and dancing to it. They also say that they have been preforming this song and dance to the people too and what connects them to their people.