Miasmic Burst

Miasmic Spells, along with PvP Worlds and the accompanying Zuriel's staff required to cast them, were released by Jagex on 15 October 2008. View the update

Miasmic Burst requires a magic level of 73 and can do a maximum of 24 damage per hit (maximum damage of 24*9 = 216 damage per spell,) making it the strongest burst spell. In addition, any players affected by the spell will attack with melee or ranged 50% slower. (weapon attack speed cut in half) for 24 seconds. As with all Ancient Magicks spells, the quest Desert Treasure must be completed to cast this spell. The spell also requires Zuriel's staff, making it one of the first Ancient Magicks spells to require more than just runes to cast.