Protego

Protego is a Defensive Spell. It is obtained during the quest Target Practice in Year 1. While Protego is active, certain spells such as Duro and Levicorpus will have no effect. However, Protego will not shield the caster from the effects of some spells, such as Avada Kedavra or Concateno.
Shields take 1.25x damage from all sources that do not ignore shields. Electric damage also deals 25% damage to health through shields.
==Description==
"Creates a sphere around the caster that protects them from damage."
== Upgrades ==
=== Upgrade 1: Fortification ===
Increases shield health from 50 to 75.
=== Upgrade 2: Quick Recovery ===
When not active, Protego will regenerate twice as fast.
=== Upgrade 3: Fortification II ===
Increases shield health from 75 to 100.
Upgrade 4: Quick Reflexes (4000 points, Year 10)
Increases the parrying window by 100 milliseconds.
== Parrying ==
If Protego is cast right before an incoming spell is about to hit you, it will be reflected back at the caster, like a Glacius mirror. Some projectiles, such as the dragonhead from Fiendfyre, cannot be parried.
Parrying is very difficult as it requires extremely quick reaction time and precise timing.
== Spell Interactions ==
Protego will block the effects of the following spells:
* Aqua Carcerem
* Duro
* Immobulus
* The ice block encasement from Glacius
* Episkey
* Levicorpus
* Silencio
* Sectumsempra (blocks all effects, including damage)
* Laquem
* Tarantallegra
* Legilimens
However, Protego will NOT protect against the effects of the following spells:
* Bubble trap from Bublio
* Burning effects inflicted from any source (such as the environment, Confringo, Incendio, Encaseum Bombardo, etc.)
* Insolo
* Avada Kedavra
* Concateno
* Confundo
* Permuto
* Accio
* Depulso
* Engorgio or Reducio
== Notes and Trivia ==
* Protego's effects can be enhanced by drinking a Shield Stimulant potion.
* Keeping your shield raised comes with pros and cons. On the one hand, you will be protected from dangerous spells such as Duro or Aqua Carcerem, but on the other hand, your hitbox is significantly larger, making it easier for your opponent to land damage spells, especially Expelliarmus.
* The size of the shield bubble does not scale with shrinking or growing effects. 
Category:Defense