User blog comment:B214/Question and Answers 2/@comment-82.178.74.96-20140201113221/@comment-1359322-20140202071556

"He covers several magicians with a wall of black flames! Yeah, the black flames appear from every direction, and stop the magicians like a wall that surrounds them. The activation requirement will be fulfilled when they come within Saji’s range, and wall of flame appears around the place enemies are standing.

One of the Vritra-type Sacred Gear, [Shadow Prison]—.

Vritra’s curse of fire swirls inside it, and they will have their movement sealed. And it makes those who have been captured suffer gradually by the fire’s heat—. On top of that the [Delete Field] will be added onto it, and they will have their magical-power taken away.

Once you get captured within that prison, you will continue to be captured until all of your power gets taken away—.

Saji also sends many lines, and connects them to the magicians!

“I will transform all of your magical-powers into demonic-powers!”

Yeah, Saji’s original ability will play a big role in this. He originally connected the [Absorption Line] to his enemy, and absorbed their powers away. He even absorbed their blood—"

No his Sacred Gear is still four separate ones.