Diablo II
Necromacer Skills
Amplify Damage
Increase the amount of damage dealt by non-magical weapons.
Dim Vision
Decreases radius that enemy can see.
Weaken
Decreases amount of damage done by enemy.
Iron Maiden
Amount of damage done to you is done to the enemy.
Terror
Monsters run in fear.
Confuse
Monsters will attack everything in sight.
Life Tap
Attacking an enemy that is cursed gives you health.
Attract
Causes monsters to attack your target.
Decrepify
Slows down cursed monsters.
Lower Resist
Elemental attacks do more damage to the cursed monsters.
Teeth
Summons multiple projectiles and sends them towards enemy monsters.
Bone Armor
Similar to mana shield from the first Diablo, only it absorbs a set amount of damage. It also only takes "some" mana.
Poison Dagger
Adds poison damage to your dagger.
Corpse Explosion
Turns a monster corpse to explode like a bomb.
Bone Wall
Creates a wall of bone.
Poison Explosion
Releases a cloud of poisonous gas from a corpse.
Bone Spear
Creates a spear made of bone.
Bone Prison
Summons a cage ring of bone around a monster.
Poison Nova
Similiar to electric nova but is made of poison.
Bone Spirit
Seeks out and hits an enemy target.
Raise Skeleton
Raises one skeleton per level of skill.
Skeleton Mastery
Improves the "quality" of raised skeletons and magi.
Clay Golem
Creates a Golem that will fight for you.
Golem Mastery
Increases Golem skill and health.
Raise Skeletal Mage
Raises one skeleton mage per skill level.
Blood Golem
Summons a golem that is linked to your health.
Summon Resist
Inhances the elemental resistances of your "raised" forces.
Iron Golem
Creates a golem out of a metal object. It has the same properties of the object.
Fire Golem
Creates a golem out of fire. The golem can heal itself.
Revive
Raises a dead monster to fight for you.
The information above is from my own experiences. Your experiences may be different. Use these tips at your own risk.