Q (Agnes Takajin): How good was Zouken in his prime?
N: On the same level as Goldolf (an average third-tier noble Mage) x10
T: Make it easier to understand and be more specific.
N: If we were to say his prime was before joining with Einzberns, he would do well even against a
Servant and can even win (probably against one Servant) under good conditions. He’s a Pride
around Level 70.
T: How many of Kariya (Fate/Zero) would it take?
N: Hohoho. No matter how many zeroes you get, it’s still zero.

Heaven's Feel I Booklet Nasu & Takeuchi Q&A