"Each of the Servants have tremendous, destructive power which is why it's important for the Church to contain the war. Innocents have been used and killed to siphon magical energy if a Master should choose, but even a benign Master has the possibility of accidentally involving human lives in the middle of a battle.

But even after the conflict has ended, there is still the concern over the wish the Master may make to the Holy Grail."

The Holy Grail grants a wish, but its alignment is neutral. A destructive, selfish, or beneficial wish may be equally made by it. It possesses the power to change the face of the entire Empire if the victorious Master or Servant should wish.