Fate/Zero (2011)

S01E08 The Mage-Slayer

Title: The Mage-Slayer Plot: Chaos erupts within the walls of Einzbern Castle as Kayneth unleashes his deadly mercury sphere, clashing with Kiritsugu’s impressive array of firearms. Meanwhile, Saber and Lancer unite their strengths to confront Caster in the surrounding woods. Amidst the turmoil, Irisviel senses an emerging threat while she and Maiya make their daring getaway.