When this scroll is read, it creates a psionic blast that affects all creatures visible to the reader:
Damage: Deals damage between 1 and 2/3 of the target's max HP (Random.IntRange(1, mob.ht() * 2 / 3))
Blindness: Causes blindness for 3-6 turns (Random.Int(3, 6)) to all affected creatures including the player
Area of Effect: Affects all creatures in the field of view (fieldOfView array check)
Self-Damage: Also damages the player who reads the scroll
Visual Effect: Screen flashes white (0xFFFFFF color) via GameScene.flash()
Sound: Plays Assets.SND_BLAST sound effect