Ischaldirh

Ischaldirh, the dark archmage

A phoenix feather cloak +5
An arcanite chain mail +5
An angel hair belt +5
An octiron quarterstaff +6 (skill 10/11)
2 Dragon hide boots of agility +5

A scroll of charging
A scroll of wishing
The holy book of Infuscor
A wand of resurrection
A wand of striking
A wand of cloning
A wand of lightning
A wand of fireballs
An octagonal key

Is invisible, has infravision, ESP and telecontrol

Astr 9
Lstr 9
Dex 30
Agi 12
End 15
Per 12
Int 60
Wis 25
Cha 25
Siz 150
HP 108

Although Ischaldirh seems to have quite low stats, he is still the most dangerous foe in the game. He can summon golems made of really really mean materials, such as octiron. He can create evil clones of you. But those are nothing compared to the fact that he can pound you with spells mighty enough to kill nearly anything. He can cast massive explosions on you and summon bursts of electricity at you. He can teleport you, your limbs or your equipment away. He can disenchant your gear. And when you finally get close to him so you can end chop his head off, he'll teleport away and begins pounding you again. I seriously hope I will never have to face him. And so should you.
I once summoned him at Attnam, just as a test to see if he has a chance against the kamikaze dwarves, angels and Petrus himself. He killed everyone in Attnam without getting hit even once. 'Nuff said.