MODELS, ICONS AND NUMBERS CAN BE CHANGED QUITE EASILY. PLEASE FOCUS ON THE MAIN IDEA.This idea just hit me one day, and it is my first posted builder idea, so please be gentle.

This builder is expensive compared to the average builder but has many different options and styles that can be used.
The towers and walls of this builder is quite unique although it kind of rubs shoulders with Morphling. The walls and Towers can't be upgraded unless it has a Skeleton or that type inside and the 2 types of towers (Mage and Archer) do not attack without a Skeleton of its type inside. When a skeleton enters a building (Wall or Tower) it can not come out and the food cost of the Skeleton reduces from 3 to 1.
Necromancer BuilderUnits:Builder - Model: Kel'Thuzad (units\undead\Kelthuzad\Kelthuzad)

Icon: Kel'Thuzad (ReplaceableTextures\CommandButtons\BTNKelThuzad.blp)
Hp: 300
Mp: 300
Movement Speed: Normal
Lumber per Swing: 10 Lumber
Hold Capacity: 10 Lumber
Attack - Damage: 150
Damage Type: Magic
Attack Speed: Average
Range: 400
Abilities - Build (Undead Style)
Repair
Spirit Walk
Cripple
Necromancy: Magic Calling
Skeletal Radiance
Consume Corpse
Corpse bag
Haunt
Doom
Death and Decay
Animate Dead
Aura of Blight
Buildings made - Shelter
Ruined Wall
Ruined Mage Tower
Ruined Archer Tower
Research Center
Grave Yard
Advanced Research Center
Merchant
Worker - Model: Ghoul (units\undead\Ghoul\Ghoul)

Icon: Ghoul (ReplaceableTextures\CommandButtons\BTNGhoul.blp)
Hp: 50
Mp: 0
Movements Speed: Workers Average
Lumber per Swing: 2 Lumber (Normal)
Hold Capacity: 10 Lumber
Cost - Food: 6
Abilities - Detonate
Titan Hunter (Normal Form) - Model: Frost Wyrm (units\undead\FrostWyrm\FrostWyrm)

Icon: Frost Whyrm (ReplaceableTextures\CommandButtons
\BTNFrostWyrm.blp)
Hp: Average for Flying Hunters
Mp: Average for Flying Hunters
Movement Speed: Average for Flying Hunters
Attack - Average for Flying Hunters
Cost - Lumber: 1000
Abilities - Frost Breath
Attribute Bonus (Titan Hunter)
Siphon Mana (Titan Hunter)
Avatar (Titan Hunter)
Lich Form (Requires "Advanced Titan Hunter Training")
Titan Hunter (Lich Form) - Model: Lich (The Frozen Throne) (units\undead\HeroLich\HeroLich)

Icon: Lich (Version 2) (ReplaceableTextures\CommandButtons
\BTNLichVersion2.blp)
HP: Same as Nature's Hunter
MP: Same as Nature's Hunter
Movement Speed: Same as Nature's Hunter
Attack - Same as Nature's Hunter
Abilities - Frost Aura
Icy Prison
Attribute Bonus (Titan Hunter)
Siphon Mana (Titan Hunter)
Avatar (Titan Hunter)
Dragon Form
Skeletal Warrior - Model: Skeleton Warrior (units\undead\Skeleton\Skeleton)

Icon: Skeleton Warrior (ReplaceableTextures\CommandButtons\BTNSkeletonWarrior.blp)
HP: 200
Movement Speed: Same as Battle Constructs
Cost - Food: 3
Lumber: 150
Gold: 1
Attack - Half that of Battle Constructs
Abilities - Spell Immunity
Skeleton Mage - Model: Skeleton Mage ()

Icon: Skeleton Mage ()
HP: 50
Movement Speed: Same as Venomous Protectors
Cost - Food: 3
Lumber: 150
Gold: 1
Attack - Half that of Venomous Protectors
Abilities - Spell Immunity
Skeleton Archer - Model: Skeleton Archer ()

Icon: Skeleton Archer ()
HP: 50
Movement Speed: Same as Spear Throwers
Cost - Food: 3
Lumber: 150
Gold: 1
Attack - Half that of Spear Throwers
Abilities - Spell Immunity
Abilities: Cripple - Icon: Cripple (ReplaceableTextures\CommandButtons\BTNCripple.blp)

Mana Cost: 0
CD: 180
Cast Time: Instant
Description: Reduces movement speed, attack rate and Damage by 30%.Lasts 5 seconds.
Magic Calling - Icon: Dark Summoning (ReplaceableTextures\CommandButtons\BTNDarkSummoning.blp)

Mana Cost: 50
CD: 140
Casting Time: 10 Seconds
Requires - Basic Magic
Description: Teleports 20 Skeletons within the targeted area to the location of the
Necromancer when used. This ability can also teleport your hunter.
Skeletal Radiance - Icon: Helm of Blood thirst ()

Mana Cost: Passive
CD: Passive
Casting Time: Passive
Requirements - Advanced Magic
Description: An aura that gives all nearby skeletons a 5% chance to completely
dodge and
incoming attack.
Consume Corpse - Icon: Cannibalize (ReplaceableTextures\CommandButtons\BTNCannibalize.blp)

Mana Cost: 50
CD: 5
Casting Time: Instant
Requirements - Thanatology
Description: Consumes a nearby corpse to heal 30 hit points.
Aquire Corpse - Icon: Get Corpse ()

Mana Cost: 0
CD: 0
Casting Time: Instant
Hold Capacity: 6
Requirements - Basic Magic
Thanatology
Description: Picks up a nearby corpse for later use. The Necromancer can hold up to 6 Corpses at
one time.
Drop Corpse - Icon: Drop Corpse ()
Mana Cost: 0
CD: 0
Casting Time: Instant
Requirements - Basic Magic
Thanatology
Description: Drops all corpses for immediate use.
Doom - Icon: Doom ()
Mana Cost: 100
CD: 140
Casting Time: 1 Second
Requirements - Arts of the Fallen
Description: Instantly Converts a Skeleton into a Doom guard which lasts 15 Seconds
Death and Decay - Icon: Death and Decay ()
Mana Cost: 80
CD: 140
Casting Time: 2 Seconds
Requirements - Black Magic
Description: Damages everything in its area of effect by 5 hit points per second.
Lasts 15 Seconds.
Animate Dead - Icon: Animate Dead ()
Mana Cost: 150
CD: 200
Casting Time: 5 Seconds
Description: Revives all nearby fallen skeletons on 50% hit points.
Requirements - Necromaniac (I know what it means, and i couldn't think of anything
else. Feel free to change it if you like the idea (As if))
Aura of Blight - Icon: Aura of Blight ()
Mana Cost: Passive
CD: Passive
Casting Time: Passive
Requirements - Arts of the Fallen
Description: Gives all friendly Undead nearby units a bonus to hit point regeneration.
Frost Breath - Icon: Frost Breath ()
Mana Cost: Passive
CD: Passive
Casting Time: Passive
Description: Very slightly reduces the movement speed of the enemy target.
Requires - Expert Hunter Training
Lich Form - Icon: Lich ()
Mana Cost: 200
CD: 100
Casting Time: 5
Description: Turns the Frost Wyrm into a Lich
Requires - Expert Hunter Training
Frost Wyrm Form - Icon: Frost Wyrm ()
Mana Cost: 150
CD: 100
Casting Time: 5
Requirements - Expert Hunter Training
Description: Turns the Lich back into its original flying form.
Frost Aura - Icon: ()
Mana Cost: Passive
CD: Passive
Casting Time: Passive
Description: Slightly slows all nearby enemies.
Requires - Ultimate Hunter Training
Icy Prison - Icon: Frost Nova ()
Mana Cost: 300
CD: 160
Casting Time: Instant
Description: Traps the enemy target in a large block of ice, stoping movment and attacking
for 3 seconds. During this time, the titan takes half damage and afterwards he is
extremly slowed for 5 seconds.
Requires - Ultimate Hunter Training
Buildings:
Shelter - Icon: Nerubian Ziggurat ()
Model: Nerubian Ziggurat ()
Size: 2x2
Cost - Lumber: 10
Units Made - Worker
Upgrades - Average Shelter
Description: A building used to store lumber harvested.
Research Center - Icon: Bone Yard ()
Model: Bone Yard ()
Size: 4x4
Cost - Lumber: Average for Research Centers
Provides - Food: 150
Items Sold - Turtle Scales
Upgrades - Average Research Center Upgrades
Black Magic
Description: A building that provides basic Upgrades.
Grave Yard - Icon: Grave Yard ()
Model: Grave Yard ()
Size: 3x3
Cost - Lumber: 1500
Items Sold - Grave
Units Sold - Skeleton Warrior
Skeleton Mage
Skeleton Archer
(
Note: The grave yard can only create a Skeleton if there is a corpse nearby.
Like the Grave Yard in Melee (Ladder), The grave yard creates its own
corpses over time with a max. of 5. If there are no corpses near the
Grave Yard, it will not allow you to create a Skeleton (The same with
puppet, how you need a hunter to cast certain abilities).
Description: This building allows you to create an army of skeletons.
Advanced Research Center - Icon: Ziggurat (ReplaceableTextures\CommandButtons\BTNZiggurat.blp)
Model: Ancient Ziggurat
(Doodads\Northrend\Structures\AncientZiggurat
\AncientZiggurat0.mdl)
(The model above is a hidden model, check out
http://www.islanddefense.org/forum/index.php/topic,1605.0.html)
Size: 3x3
Cost - Lumber: Average for Arcs
Gold: 25
Upgrades: Average for Arcs (Including Expert Hunter Training)
Warrior Training
Mage Training
Archer Training
Black Magic
Arts of the Fallen
Description: Provides high level upgrades.
Grave - Icon: Ankh ()
Model: Grave Variation _ ()
Cost - Lumber: 250
Gold: 1
Stats: Same as Barricade
Description: A lightweight wall that can be thrown down easily. Creates 1 corpse every 3mins.
Ruined Wall - Icon: ()
Model: Obelisk Broken (1) (Northerend) ()
Cost - Lumber 50
Stats: Average level 1 wall
Description: A basic wall. Needs a Skeleton Warrior inside to function properly.
Wall - Icon: ()
Model: Obelisk Broken (Northerend) ()
Stats: Average level 1 wall
Damage: 10
Damage Type: Normal
Range: Melee
Reinforced Wall - Icon: ()
Model: Obelisk (1) (Northerend) ()
Stats: Average level 2 wall
Damage: 15
Damage Type: Normal
Range: Melee
Cost - Lumber: 250
Magical Wall - Icon: ()
Model: Obelisk (1) (Northerend) ()
Stats: Same Armour and Health as Golem Walls
Damage: 25
Damage Type: Normal
Range: Melee
Cost - Lumber: 250
Ruined Mage Tower - Icon: ()
Model: Standard (2) (Outlands) ()
Description: Needs a Skeleton Mage inside in order to function Properly
Cost - Lumber: 50
Mage Tower - Icon: ()
Model: Standard (1) (Outlands) ()
Stats: Same as Pirate Tower (Tier 1)
Enhanced Mage Tower - Icon: ()
Model: Standard (1) (Outlands) ()
Stats: Same as Pirate Tower (Tier 2)
Cost - Lumber: 100
Super Mage Tower - Icon: ()
Model: Standard (1) (Outlands) ()
Stats: Same as Pirate Tower (Tier 3)
Abilities - Feed Back
Cost - Lumber: 250
Mega Mage Tower - Icon: ()
Model: Standard (1) (Outlands) ()
Stats: Same as Pirate Tower (Tier 4)
Abilities - Feed Back
Cost - Lumber: 600
Ruined Archer Tower - Icon: ()
Model: Obstacle (1) (Outlands) ()
Description: Needs a Skeleton Archer inside in order to function Properly
Cost - Lumber: 50
Archer Tower - Icon: ()
Model: Obstacle (2) (Outlands) ()
Stats: Same as Murloc Tower (Tier 1) with a little extra range
Enhanced Archer Tower - Icon: ()
Model: Obstacle (2) (Outlands) ()
Stats: Same as Murloc Tower (Tier 2) with a little extra range
Cost - Lumber: 100
Super Archer Tower - Icon: ()
Model: Obstacle (2) (Outlands) ()
Stats: Same as Murloc Tower (Tier 3) with a little extra range
Cost - Lumber: 250
Mega Archer Tower - Icon: ()
Model: Obstacle (2) (Outlands) ()
Stats: Same as Murloc Tower (Tier 4) with a little extra range
Cost - Lumber: 600
Upgrades:
Basic Magic - Icon: ()
Cost - Lumber: 500
Effects - +50 Mana
Allows: Magic Calling (Ability)
Skeleton Warrior (Unit)
Skeleton Mage (Unit)
Skeleton Archer (Unit)
Advanced Magic - Icon: ()
Requirements: Basic Magic (Upgrade)
Cost - Lumber: 1000
Gold: 5
Effects - Allows: Skeletal Radiance (Ability)
Thanatology - Icon: ()
Requirements: Basic Magic (Upgrade)
Cost - Lumber: 1500
Effects - Allows: Consume Corpse (Ability)
Acquire Corpse (Ability)
Drop Corpses (Ability)
Warrior Training - (
Note: These Upgrades (besides movement speed) Also apply to that
type of tower.)
Icon: ()
Requirements: Research Center (Building)
Cost - Lumber: 1000
Gold: 20
Effects - + 100 HP to Skeleton Warriors
- 50 Lumber from Skeleton Warriors
+ 50 Movement Speed to Skeleton Warriors
Mage Training - (
Note: These Upgrades (besides movement speed) Also apply to that
type of tower.)
Icon: ()
Requirements: Research Center (Building)
Cost - Lumber: 1000
Gold: 20
Effects - + 20 Damage to Skeleton Mages
- 50 Lumber from Skeleton Mages
+ 50 Movement Speed to Skeleton Mages
Archer Training - (
Note: These Upgrades (besides movement speed) Also apply to that
type of tower.)
Icon: ()
Requirements: Research Center (Building)
Cost - Lumber: 1000
Gold: 20
Effects - + 50 Attack Speed to Skeleton Archers
- 50 Lumber from Skeleton Archers
+ 50 Movement Speed to Skeleton Archers
Black Magic - Icon: ()
Requirements: Research Center (Building)
Advanced Magic (Upgrade)
Cost - Lumber: 1000
Gold: 15
Effects - Allow: Death and Decay (Ability)
Grants: + 50 Mana
Arts of the Fallen - Icon: ()
Requirements: Research Center (Building)
Advanced Magic (Upgrade)
Cost - Lumber: 2500
Gold: 20
Effects - Allows: Doom
Aura of Blight
Necromaniac - Icon: ()
Requirements: Merchant (Building)
Arts of the Fallen (Upgrade)
Black Magic (Upgrade)
Cost - Lumber: 2000
Gold: 35
Effects - Allows: Animate Dead