"Magical Sages Galilei & Kepler" is the thirteenth episode of the Yu-Gi-Oh! ARC-V anime. It first aired in Japan on July 6, 2014.

Somehow, Reiji Pendulum Summons and mounts an attack against Yuya. Yuya shows off his ability to Pendulum Summon, something he thought only he could do, and tries to counterattack by Entertainment Dueling, but due to the sheer pressure from Reiji, he’s unable to hide his shock. With You Show Duel School’s fate on the line, Yuya is extremely anxious.