Heavenly Mark (天空のマーク) is a Blaze Magic type of spell. It's known user is Kurai Urahara .
The user consetrates a high amount of magic energy into the palm on their hands. The magic energy ratio has to be perfectly balance. Once balanced, creates a orb within the palms of his hands. The user then sends the orb into the sky, and then it expands into a sizable sphere. The sphere then smashes into the opponent and explodes with a high blast radius. Anyone within the blast radius will be turned into ash by the burning hot black flames. The user can use up almost all of their magic energy using this attack.