Slayers Great (スレイヤーズ ぐれいと) is the third movie in the Slayers anime. It was released in 1997 and directed by Hiroshi Watanabe.
Lina Inverse and her traveling companion/arch-rival Naga the Serpent arrive at a town where the art of golem-manufacture is highly prized and become involved in the rivalry between a father and son with very different ideas on how golems should be made. When two rival lords seek the aid of the men in efforts to build golem armies to enhance their power and prestige, the two sorceresses find themselves the central attractions in a festive duel of massive golems powered by their magic.
From
Wikipedia