Power Of The Fallen Souls

"I guess I thought too much…" Asher mumbled as nothing happened after opening the grimoire. He saw hellish scarlet letters inscribed on the pages and carefully read them,

[ "A part of the souls of the six fallen beings exist in this tome. Only the one who carries the blood of the Fallen Maiden can call upon the power of these six souls. But beware…holding the power of any one of these souls will not only bestow upon you their strengths but also their weaknesses ]

Asher felt he didn't have to worry about the first half of the paragraph since the Hell Maiden mixed her "blood" with his, which satisfied the condition to let him use this grimoire.

However, he was slightly concerned about the rest of what he read. Will he see an overall benefit or not?

Still, he decided to read further first,

[ Girgal, the Nefarious Imp. Known for its agility and trickery, call upon his power to evade the impossible or trick the gods ]