With this new toolkit he needs to just
Turns into a passive ability that For each point of mana missing by the target unit, damage is dealt to it and surrounding enemies. The main target is also mini-stunned.
The first to ascend to become like the demon all Turstarkuri worship he gains three abilities
(demon form ability 1) Blink
same just has three charges
(demon form ability 2) Past Step
returns him to a previous blink location
(demon form ability 3) counter spell
same with a cooldown of 3/2/1 seconds.
Drains Mana from a single enemy and gains health.
Gets stronger based on the mana pool of surrounding enemies.