Name of Demigod: Tactician (temporary name, more of a description)
Type of Demigod: General
General description: General focused on building and buff'in structures to give tactical advantages to the battlefield.
General basics: This is a dark general, who was charged with fortfying the gates of the underworld. He is undead and rides an undead horse. He is kind of squishy (although he can buff himself to be rather tough) and does not have much in the way of direct damage. He is, though, quite fast on his mount which allows him to navigate the battlefield to maximize his strategic dominance.
An alternative look could be something like "Evil Ash" from the movie "Army of Darkness" 
(sorry, can't find a good pic anywhere)
Abilities:
Ability 1.
- Bone Wall - give ability to law down wall that can funnel/block creep/demigod advancement. Walls are comprised of the bones of the fallen. Start out weak
- Walls have more HP and take more damage (level 3)
- Walls have even more HP
- Walls have even more HP and are equiped with spikes, which cause damage to any unit that attacks it (not against ranged units, though)
Abiilty 2.
- Fortify - buffs any structure for a duration improving its health and damage resistance (offensive structures with fortify buff give the Tactician partial credit (gold/xp) for creep/dg kills).
- More health and DR, and improves attack speed (if it's a tower or other offensive structure)
- More health and DR, and now improves tagets damage (if it's a tower or other offensive structure)
Ability 3.
1. Bone Pile (turret)- Constructs a non-moveable turret that attacks targets. Turrets are comprised of the bones of the fallen and "rise from the ground" and form on the battlefield. Can be buffed by ability #2
2. More skills into it more health/dr/damage/attack speed
3. Max level turrets lets the turret attack 2 targets at once
Ability 4.
1. Scything Sweep - Major attack that uses Scyth to sweep and do AoE damage around the demigod. If demigod kills any creeps/demigods the ability has a passive chance to temporarily raise that unit as an undead warrior and fight for the Tactician.
2. Additional skill points increases damage and improves the chance of raising a fallen warrior.
Ability 5.
- Entrench - the demigod gives off an aura so that any unit in it's radius is given a defensive bonus, although also causes a small run speed debuff
- Additional levels in this ability improves defensive bonus, and reduces run speed penalty
Ability 6.
1. Blighting Aura - the demigod gives off a plague aura that sickens the enemy making them less effective in combat as well as dealing some DoT damage. Reduces Attack speed, defense, damage, and does minor damage overtime while aura is active.
2. Additional skill levels increases the effects of plague
Ability 7.
1. Call for the Dead (Reinforcements) - the tactician calls in for reinforcements, which is a 4 creeps. These reinforcements are temporary and are skeleton warriors
2. Improves the duration and damage of the creeps
3. Grants 2 additional creeps, which are undead priest
4. Grants 2 additional creeps, which are undead siege creeps
5. Grants 2 additional creeps, which are undead giants
Ability 8 (Passive demigod bonus skills)
1. Each level (6 total) increases summoned unit health/damage/armor, increases bonuses for fortify, and increases the percentage of XP/Gold that the demigod recieves from buffed tower/summoned turrets kills
I dunno, all I can think of for now
