ver.

Death Bolt

Conjuration
Dark
Sorcery
Level 1
Range 8
Charges: 15
Deals 9 dark damage to one target.
Slain living units are raised as skeletons.
Raised skeletons have max HP equal to that of the slain unit, and deal 5 physical damage in melee.
Skeletons of flying units can fly.

Attributes:

9Damage
5Minion Damage

Upgrades:

2 - Soul Battery
Deathbolt gains 3 damage whenever it slays a target, lasts until next realm.
3 - Winter Bolt
Deathbolt also deals ice damage
5 - Chaos Skeletons
Raised skeletons are Chaos skeletons, gaining resistances, a chaos ball attack, and spawning a number of imps on death proportional to their max hp.