The contents of this page no longer exist in RuneScape, and this article is kept for historical purposes.
Miasmic spells were one of the types of Ancient Magicks combat spells that halved the attack speed of Melee and Ranged for a limited time. Miasmic spells required Zuriel's staff to be cast and the special effect only worked on other players, not NPCs. The miasmic spells were released years after the other Ancient Magicks combat spells, and the spell icons of miasmic spells looked different.
The spells were removed from the game when the Evolution of Combat was released, and the other damaging ancient spells (smoke, shadow, blood, ice) were renamed and aligned with the four elemental sub-types of damage (air, earth, fire and water). However, Miasmic Barrage was re-added to the game later on as a special attack for Zuriel's staff, costing 50% adrenaline. The new version of Miasmic Barrage retained the effect of reducing the target's attack rate, but also gained an additional effect in PvP where it halves the opponent's adrenaline gain for 15 seconds.
