Help on spell acid rain

Current upkeeper: Pickett
Casting time    : 4
Spell cost      : 1
Spell type      : offensive (area)
Spell words     : iapps hatoa ahihai
Affecting stats : Int, Wis, Lvl
Affecting skills: Arcane power, Energy focus
Affecting spells: Acid rain
With this spell, a magician powerful enough can concentrate his will power
and strike all living beings in the room with deadly acid rain.

Acid arrow < List > Acid resistance