The three "batch processing" methods Raven had pointed out corresponded in the Task Description to:
Service Driving Art, Self-Pruning Art, and Materialization Art.
The names were simple and straightforward, fairly well matched to the relevant techniques. The "Service Driving Art" Raven had specifically highlighted was, just as she had said, seemingly one of the Four Methods Diagram—"Destroy," "Expel," "Imprison," and "Service"—within the Demon Subduing Diagram Scroll: the Service Demon Scroll method.
Both Ronan and Raven had used this technique before.
During the Battle of Three Peaks Top, Raven had borrowed power to manifest that Harbinger Bird, captured the Joker version of the Skull Demon King in one stroke, then plunged into the Mist Labyrinth with the newly manifested Hundred Peaks Monarch.
As for Ronan, he had used it far more often. Here in Inner Earth, the Perception Chain Network he had formed by simulating Gray Substance was activated through the Service Demon Scroll's methods. During Testing Time-Space, he had also used the Harbinger Bird version of the Service Demon Scroll to deal with Evil Poison and Dream Divine Abomination contamination.
Besides using it himself, he had witnessed Chun Great Lord's Service Light Divine Bird version. Though, in hindsight, the timing had not been ideal, the Great Lord's method of temporarily "zeroing out" the Karmic Poison Contamination in the frontline troops was still truly admirable.
Though both were Service Demon Scrolls, setting aside the difference in level and realm, Ronan's version was actually a simulation through Fantasy Configuration. Chun Great Lord's, meanwhile, was genuine Demon Subduing Diagram Scroll cultivation. Thus, even if the Harbinger Bird simulated by Fantasy Configuration extracted the contaminating elements, it still required the Fire Seeds differentiated by the Xuan Crystal Array to suppress them.
There were no Fire Seeds to be found on Earth, but there was