Thank you!
Thank you!
Given the existence of Souichirou Kuzuki, that's not even a requirement. XD
Seriously though, Ryuunosuke Uryuu didn't have any formal training whatsoever, he just performed a half-assed ritual and managed to manifest a servant, so having a magic circuit, even one that's never been activated before is the literal bare minimum required it seems to summon a servant, after which the title of master can be held by a potato so long as its got the means to supply mana.
This is like the most hype Fate i've seen
btw
Spoiler:
Spoiler:
F. Assassin and Saber getting spooked by Ayaka's phone in latest chapter was amusing