“About your Noble Phantasm . . . Can you still use the birds and the dog?” Bazdilot Cordelion asked, servicing a pistol-shaped Mystic Code while members of the Scladio Family were busy repairing his workshop.
Alkeides lifted his dematerialization and stared at his own hands as he answered.
“. . . The birds won’t be an issue but activating Kerberos will prove difficult.”
“Are there limitations on the regeneration of the individual beasts?”
“No. Ordinarily, with your magical energy I should be able to reactivate them after a day. . . .
But I can’t do it now. It seems its actual Spirit Origin was scraped away by that ‘black mist,’ along with three of the horses.”
“You have a Noble Phantasm that steals Noble Phantasms, but I never expected one of yours to be stolen. Still, the dog or horses falling into enemy hands shouldn’t pose a problem,” Bazdilot said dispassionately.
Alkeides, however, silently shook his head.
“Not necessarily.”
“. . . Does something worry you?”
“They may have been stolen, but the ends of the royal orders I was tasked with are the foundation of my Spirit Origin. Even if they are no longer mine, I know when they undergo a change.”
The vengeful bowman frowned beneath his cloth as he carefully probed the alterations in the “links” of his Spirit Origin.
“But . . . this is . . .”
After a short pause for thought, Alkeides clenched his fists.
Then, as magical energy mixed with mud and blood trickled from between his fingers, he whispered with quiet rage.
All the while recalling the familiar darkness of the other side that edged toward him through the faint link of magical energy.
“Could the one who controls that black mist . . . possibly be a relative of Hades?”

Fate/Strange Fake: Volume 6, Interlude ("Mercenary, Assassin, Pale Rider")