Astigmatazer is a mini-boss summoned by Oblivion. It's spawned when the head with purple eyes is at half health.
Its stats are:
HP: 70000
Attack: 80
Defense: 51
It can drop:
50% - 3-7 Souls of Sight
50% - 2-6 Souls of Height
100% -7-9 Souls of Fright