Slow Down is a type of Shader Magic obtained after clearing the Flame Temple and talking to the fire sage, Crimson. Slow Down causes the world around the player to "slow down," just as the name implies. It is generally used to avoid obstacles such as moving spike traps and defeat fast moving enemies. Unfortunately, this Magic has no effect on bosses, reducing it's overall usefulness.
Slow Down costs five magic for male characters and four for females to cast.