Your Sacred Gear has merged with your Holy Grail and became a unique sub-species of the Longinus Sacred Gear “Sephiroth Graal,” which holds domain over the concepts of souls and life. The knowledge gained by tapping into the Holy Grail allowed the Sephiroth Graal to advance to further heights by gaining access to the root and, by extension, the throne of heroes, splitting it into three different sacred gears similar to the sub-species possessed by Valerie Tepes, each grail controlling separate abilities and improving in power when used in unison.
The base ability of the Sephiroth Graal is manipulating and generating souls. Through this ability, the user can create or alter life, such as using the soul of a dragon to modify the species of another being into a dragon or remove the weakness of the race in question, such as a vampire's weakness to sunlight or running water. Additionally, the Grail is adept at bringing back the dead, no matter how long they have been deceased.
The user can summon the spirits of the long-dead by tapping into the throne of heroes, and the user can also summon heroic spirits from various classes and incarnate them fully, allowing them to access the power they possessed in their life, along with the boost provided by myths and legends. The summoned servants are loyal to the user and serve to protect them from danger. The user can modify the servants by manipulating the saint graph, granting them access to multiple classes simultaneously, or replicating the grail mud used by Angra Mainyu, the Shadow.
The Holy Grail has enhanced its capacity to uncover knowledge by establishing a connection with the root. This bond between the sacred gear and the Holy Grail has amplified the knowledge of the root, enabling it to access the knowledge of the present world and update the information stored within the root and throne of heroes.