Corrupted knowledge

"Your mind has been deceived"
Corrupted knowledge is an debuff that, when applied, will cut weapon damage by half, and deal 5% of your health every time a weapon is used, it is applied semi-rarely by "Quod Aeterna Vicis" Bosses and enemies

Tip

 * Weapons like the last prism will be excellent for overcoming this debuff, as you are only damaged once per use, and one usage can last quite a while with mana potions