Elemental Augury

For the next minute, you imbue your weapon with an additional +1d6 Elemental damage type of your choice (Acid, Lightning, Fire, Cold, Poison, Necrotic, Radiant, & Psychic). Damage dealt to targets in this way act as such: If the target was immune to the chosen damage then treat it as resistant. If the target was resistant to the chosen damage then treat as normal. If the target was neutral to the chosen damage then treat as vulnerable. If the target was vulnerable to the chosen damage then treat as critical.