just make the spec consume 100% spec bar if it doesnt already. Havent used it myself but been used on me.. thought i was lagging when attacking lol.
if all of your spec is gone you lose a lot of k0 potential. Effect should only last 15 seconds anyway.
- from the rs3 wiki
Zuriel's staff has a special attack called Miasmic Barrage. It consumes 100% adrenaline and 100 charges on the staff (0.1% of maximum charge). A magic attack is launched at the opponent,
dealing up to 200% ability damage
reduces their attack speed by a tick for 15 seconds
halves their adrenaline gain for 15 seconds
*replace adrenaline for special attack if youre confused*
10 Year Veteran 
Originally Posted by Palidino
