Archon ---> Quake. You heard right, elements of the 80's micro game archon extrapolated into the Quake universe. Get ready for a wild ride. (free stuff | no warranty | see disclaimer.txt | blah blah blah.)
The attack spell seen here is Orders melee attack.
Select the spell from the attack list (impulse 1) and press the fire button.
If any enemies or damageables are in a short range, the 2 layer sphere effect will appear and slowly fade away. Any entity that takes damage and is touching the sphere will get hurt. Power points are used up based on how many enemies are hit.
LoL, Epic!