Velys the Necromagus

Model: some kind of evil fem mage not banshee please. Maybe Lich
race: Undead or Night Elf
Stats: 23 Str, 1 agi always, 36 Int

Skittlez:
Grave Bind
Effect-Damages the target over a duration of time
Target-Enemy unit
Damage-3/5/7/9/10 + int every second
Duration-5 seconds
When Spell is Upgraded-Damage is increased.
Umbral Protection
Effect-Reverses and returns damage
Target-Ally unit or self
Heal Amount-5% of shielded target's health
Returned Amount-50% of damage dealt
Duration-3 seconds
When Spell Is Upgraded-Cooldown is decreased.
Sacrifice
Effect-Converts health to mana, if the spell kills Velys, then it deals aoe damage
Target-None
Damage-Amount of mana Velys had at time of death
Conversion amount-100 health to 100/125/150/175/200 mana
When Spell is Upgraded-Mana gained is increased
Tentacle of Deritril
Effect-Summons a tentacle in the center of the target area, and creates a thick fog which causes missing and block's enemy heroes' vision
Target-AoE large
Duration-Until Deritril's Tentacle dies
Tentacle's Damage-100
Tentacle's Health-250/325/400
Accuracy Decrease-25/35/45
When Spell is Upgraded-Health of tentacle and accuracy decrease increases

pretty good. But liked your other ideas better.

give me opinions on spells or what you think needs changing

Sacrafice sort of seems like it should be an ultimate.

a suicide ult? ok whatever you want lol

lol