Ultimancer

The build focuses on maxing out the following skills:


 * Raise Skeleton
 * Skeleton Mastery
 * Corpse Explosion

One skill point is added to the following skills:


 * All curses
 * Teeth
 * Golem Mastery
 * Summon Resist
 * Clay Golem
 * Blood Golem
 * Iron Golem
 * Fire Golem
 * Raise Skeletal Mage
 * Revive

Rest of skill points go to the following skills:


 * Golem Mastery, Dim Vision or any skill of your choice

Mercenary: Act II Offensive Mercenary (Might Aura) with the following gear:


 * Guillaume's Face (socketed with 15% IAS Jewel)
 * Hone Sundan (socketed with 2 Shael Runes and an Amn Rune)
 * Hone Sundan (socketed with 2 Shael Runes and an Amn Rune)

For the stat point distribution, see Summonmancer.

For this build, the summons are the tanks, the mercenary is the corpse-maker and you are the corpse-exploder. With Corpse Explosion as the main attack spell, the Ultimancer can arguably take down the largest crowds of enemies in the least amount of time in Hell difficulty. The strategy here is to use Attract on a monster, wait for the enemies to swarm in, cast Amplify Damage, watch a corpse drop and *bling* away. With 95% Crushing Blow on your mercenary who hits at a 6-frame rate, any monster, or boss, will succumb very quickly. To kill bosses even faster, make an Iron Golem out of an item that has the Crushing Blow bonus.