[2023] Knowledge of an Erased Mage "Endurance Threshold" Affix

It does not count as Endurance Threshold for any effects that scale off of Endurance Threshold other than the damage calculation itself. We cannot make it actual Endurance Threshold because that’s a precalculated stat, so it’s only updated on stats update (e.g. when you equip an item or receive a debuff), and as such Endurance Threshold itself cannot scale with missing mana.