When cast, a mist is released in front of the caster, which causes low damage to equipment durability.
This Pyromancy is almost ineffective in PvE.
Acid Surge, due to the update 1.08 of October 2016, has a more powerful effect than before. It can be used to destroy opponent's equipment very quickly to receive less damage or also to inflict more. The main risk is the high time required to cast, that can be used by a rapid opponent to hit.