Darksiders 2 – The Necromancer Tree, Exhume Skill tree

Exhume: Death summons up a pair of Ghouls to aid him in combat. They help him both with attacks and drawing fire away.
Cost: 300 Wrath
Prerequisites – lvl. 1
Level 1: 2 Ghouls who deal 26 per attack.
Level 2: 2 Ghouls who deal 40 per attack.
Level 3: 2 Ghouls who deal 53 per attack.

Undying: The Ghouls become hardier, tougher
Prerequisites – lvl. 3, Exhume
Level 1: Increases Ghoul Health by 451
Level 2: Increases Ghoul Health by 632
Level 3: Increases Ghoul Health by 813, Summons an additional ghoul.

Enervation: The Ghouls attacks feed Wrath to Death.
Prerequisites – lvl. 3, Exhume, Undying
Level 1: Each Ghoul attack gives 1 Wrath
Level 2: Each Ghoul attack gives 3 Wrath
Level 3: Each Ghoul attack gives 4 Wrath

Fiery Souls: Ghouls deal additional fire to surrounding enemies
Prerequisites – lvl. 5, Exhume, Undying
Level 1: Ghouls deal 13 fire damage. Aura deals 32 damage per second.
Level 2: Ghouls deal 20 fire damage. Aura deals 64 damage per second.
Level 3: Ghouls deal 20 fire damage. Aura deals 64 damage per second. Exhume gains 5% arcane critical strike chance

Death's Allure: Death's enemies are driven to attack Ghouls.
Prerequisites – lvl. 5, Exhume, Undying, Enervation
Level 1: Increases radius by 50%
Level 2: Increases radius by 100%

Corpse Explosion: When your Ghouls die, they now explode and knock down enemies as well.
Prerequisites – lvl. 8, Exhume, Undying, Fiery Souls
Level 1: Explosions deal 402 damage
Level 2: Explosions deal 562 damage
Level 3: Explosions deal 723 damage