Mondain

Location Mondain's Lair

Notes Attack is greatly weakened when gem is destroyed, uses spells at range (magic missile and psyonic shock deal damage, mind blaster reduces all stats by 10%)

Mondain's normal attack is devastating, dealing hundreds of damage per hit until you destroy his gem. Even then he's no slouch, and he can cast spells if you walk away from him. He doesn't need to fire them on a line, but your ranged attacks don't need to be used on a line either, so that's no problem.