>>64396809You can run an RNG summon but it's rare for mages to do that in the VNs
Usually you use an artifact and anchor that summon to the artifact to get the Servant you want (does not guarantee class, but usually you can intuit what it'll be)
But you can add a Berserker Rage Modifier to your summon and basically lock in a Berserker if one hasn't been summoned already
Also
>>64396698The two most important summonings of Berserkers in the core story (F/SN and F/Z) resulted in the ultra-giga-powerful mana battery loli being basically shitstomped internally just to keep it around and under control, and literally killed the other guy who was juicemaxxing on mana
