Impervious

Impervious [Type]

Interaction - Same, Different

Effects - Character has a +1 to Saves against the Type listed beside the name. If a character has multiple levels of Impervious against the same Type, these stack - a Marrulurk with Impervious I against Fire gets a +1 save vs. Fireball. If they then get Cloak of Flames, a Cloak that has Impervious II [Fire], this becomes Impervious III [Fire].