[CHAMPION CONCEPT] Agatha, Widow of the Void

Agatha, the Widow of the Void Concept: Something like this. For the unitiated, this is Mina Harker from League of Extraordinary Gentlemen. I envision Agatha as a woman dressed in Victorian era esque clothes with a dark streak to her. Primary Role: Mage Secondary Role: Support

Lore: Agatha has a dark and mysterious past which has something to do with the void. Whatever.

Summary: Agatha is an AP based mage that does equally well in the jungle or lane. Her primary damage output comes from her Q and W abilities working very well in tandem, and if things get rough she relies on her E to get away to safety. Her ultimate is teamfight oriented, very well suited for securing objectives such as Dragon or Baron, but is situational in its use. Her abilities are powerful but allow for plenty of counterplay.

I have opted not to put in stats for the abilities she casts, but I'd rather get input on her concept.

Autoattack range: 525 Resource: Mana

Passive:

Dark Offering

Whenever an enemy champion dies, Agatha can perform a ritual at the place of their death (corpse) which takes 3 seconds of channeling. Once finished, Agatha gains a permanant increase in ability power and spellvamp.

This ability can only be used while the enemy champion is still dead, but if it comes back to life while the channeling is ongoing the ability is not interrupted.

Q

Portent Strike

A two step ability. First, the spell is cast on a allied or enemy target, surrounding it with dark energy. The target is healed the target over time if it is an ally or damaged over time if it's an enemy. The second cast of the spell releases a dark tendril from the spell's target, dealing damage to all targets hit in a line (+% of AP) and slows them.

To clarify, the second cast or the skillshot uses the target of the spell as the cast point, not Agatha (unless she targets herself with the first cast). Picture for the sake of clarity

W

Wicked Promise

Agatha mind controls an enemy unit or small monster, placing it under her control for a few seconds. While under her control,she can order it around (as Mordekaiser or Annie R). The unit gains a bonus to its attack damage (+% of Agatha's AP). When the duration expires, the unit returns to normal and continues doing what it was doing.

E

Eldritch Shroud

Agatha shields herself with a dark energy for 3 seconds. Enemies that attack Agatha with an auto attack are stunned and damaged (+% of AP). Enemies can only be stunned/damaged one per cast of Eldritch Shroud.

R

Manifestation

Agatha targets an area with dark energy. Every patch of wall within the area becomes a portal to the void, releasing dark tentacles that lash out and damage enemies within range per second (+% of AP). Enemies struck are slowed. Picture to explain targeting.

This is my first time posting a Champion Concept so my formatting might be off. Any and all criticism is welcomed.