Armor

Armor is one of the many unit statistics in the game, among others such as Attack and Health. Armor reduces all incoming damage by the unit's armor value. For example, a unit with 5 armor that gets attacked for 6 will only lose 1 health, instead of losing 6 health. Conversely, if a unit has below 0 armor, they will be more vulnerable to damage than normal. For example, if a unit with -10 armor were to be hit by a 1-damage spell, they would lose 11 health, instead of losing 1 health. Piercing Damage ignores positive armor, but still gets amplified by negative armor. Many effects in the game can modify a unit's armor.

"Armor" also refers to the Armor equipment items sold in the Shop. Armor items are equipped into a hero's second equipment slot, appropriately granting them additional armor.