Reducio

Reducio is a Charm that shrinks objects, players, and certain NPCs to a smaller size. While in a shrunken state, living beings have a smaller hitbox, but take 20% more damage. 
Reducio is obtained as part of the Year 7 quest "Growth Spurt" during which it must be bought from Summer's Spellbooks for 800 points.
==Description==
"Use to shrink objects and living beings in size."
==Upgrades==
Upgrade 1: Duration (1500 points, Year 3)
Effects of Reducio will last longer.
Upgrade 2: Atomic (4000 points, Year 8)
Intensity of Reducio increased, but cooldown is higher.
==Notes and Trivia==