Arm of King Leoric

As far as skill bonuses go, Arm of King Leoric is certainly one of the best wands for a Necromancer focused on summoning. In fact, it's very difficult to find a magic wand that even comes close to what's offered.

The only downside is the chance to cast Bone Prison when hit: this could trap a character with a dangerous opponent in melee range. Having an item with Teleport charges (or, more costly, Enigma) is recommended to avoid this scenario.

Commonly paired with Beast: summon an army with this wand equipped, and then switch to Beast to provide a powerful offensive aura. Minions summoned in excess of lost skill points will expire, but those that remain will retain their increased combat stats.