Halaster (Infinite Dungeons)

Halaster is the master of Undermountain. He is reputed to be mad and very powerful.

Special abilities
Halaster has permanent darkvision and true seeing. He is immune to paralysis, slow, entangle, movement speed decrease, and the specific spells magic missile, Isaac's lesser missile storm, and Isaac's greater missile storm. Halaster has a variety of spell-like abilities, each of which he can cast with a caster level of 15. Of these he can cast delayed blast fireball, elemental swarm, hold person, meteor swarm, and power word, stun once per day; fireball twice per day; and charm monster, dispel magic, and greater spell breach four times per day.

Halaster is a level 30 wizard with the following spells prepared.