“There’s always something that gets through. For you, right now, it’s this.”
Something has found the gap — in your armor, your constitution, your nature. One type of harm lands harder than it should, and until the weakness is addressed, that’s the opening everything will aim for.
Effect: Increase incoming damage of the specified type by +5 per tier. Applied after all other modifiers. Stacks up to 3 tiers.
Removal: Ends when the duration expires or is cleansed. If Vulnerable is an inherent creature trait, it cannot be removed — though it can still be canceled by Resistance.
Opposition: Opposed by Resistance. When both are present for the same damage type, subtract the lower tier from the higher — if equal, neither applies.