Reworking the Passive and the way it work with abilities would be probably best and making the Positive and Negative Charge system go away and just apply a Charged debuff instead, remove the ranged interaction and keep the True damage interaction and reduce the length to 4 seconds like I figure.

And I was thinking AP Carry. Focus on being able to control Minions most effectively and press forward while being a Team fight player with her CC potential. She be a very positional based champ over all where she is in the fight and how her charges are applied.

And Honestly this is all just good fun and my hope that The Riot Daimya might see it as I have heard from her stream she always wanted some one to make a champ and that is part why she used what name she did as it sounds like a Champs name.

The single charge sounds great, honestly; having multiple ones just added too many interaction possibilities, I for one didn't feel up to the challenge of making them, much less balancing them.

I'll keep in mind that this is supposed to be a carry for future comments. My general stance on APCs is high burst, high Utility (zoning), and short duration clutch cc for positioning/kills.

Yes, the passive needs something AoE to make it comparable to other damage based passives (i.e. Ori's). Well, lets see, if we make the passive so that the AoE affects all enemies, then if we use an AoE on a minion wave + enemy, then trigger the passive with another AoE, the ability will be completely overpowered. Simultaneously however I think the true damage helps farming, so I don’t really want to lose it on minions.
Solution: Marked enemy Champions w/in 400 units of each other are affected by the strong magnetic interactions between their two marks.
Now there are a number of ways you could take the ability from here; it could be straight damage output based upon the number of enemies w/in the AoEs, or chained AoEs, or it could have a cc effect sort of like Kennen’s passive. Since the rest of the kit has a lot of cc, lets go w/ damage.
A straight damage granting passive would be ori’s, it does 10/18/26/34/42/50 +15/35/55% Ap scaling per auto attack. An AoE should do less single target damage than this per rank for 2 champions hit (since single target is something else), do equivalent damage at 2-3 champions hit, and better damage for 4-5.
Your AoE passive ability can proc (w/o cdr) at most once every 12 seconds. Ori’s base attack speed starts at .658, and ends at 1.07 w/ no AS items/buffs. Lets average this to be about .8 attacks/second. Lets say that she can’t attack uninterrupted the entire time, so she gets 4 attacks off, then the stacks on her passive degrade, she stacks the attacks again, and so forth. Her first round of attacks takes 3.2 seconds, say there is a 4.8 second pause, her second round of attacks takes 3.2 seconds, and say there’s another attack at max damage thrown in randomly in there so the total time is 12 seconds. Total base damage is 90/180/270/360/450 + 3.75 AP scaling. Balanced base damage should be about a 25%-33% of this amount, so the effect should do between 15/45/68/90/113 and 30/60/90/120/150 + .9 scaling.
Well, this balancing assumes you only use your abilities to apply the charges; considering you could also auto attack to stack charges these values should probably be reduced a bit. The damage from Ori is probably a bit of an overestimation as well, so I’d tend to scale these values down. Maybe .5 AP scaling, and 20/40/60/80/100 damage.

Might also reduce the AoE size for chaining people together from the above suggestion.

My initial thought was something along the lines of your old passive, but w/ a clearer explanation. I like your interpretation of what I wrote better however. So heres a rewording along those lines:

Enemies hit by an ability or auto attack from Damyia are magnetically polarized. When polarized targets are caught in another of Damiya's abilities or auto attacks they are explosively depolarized taking 30 + .2 AP (need to come up w/ a scaling for this) magic damage. Depolarization damage increases by 100% for each nearby polarized champion (say 350 units to pick an arbitrary number). Additionally, depolarizing one enemy champion causes other nearby polarized champions (same distance) to explosively depolarize.

Took the numbers basically from my previous balance attempt; hopefully the damage would be balanced; it does less dps single target than say ori's passive, but it does much better burst, and is a pretty big AoE. I think it would work well for AoE comps, particularly if you had a galio/ammumu/morg/kennen, although the combination of pushes and pulls in the champion's arsenal means that w/ proper play it should work well anyway.

After briefly skimming, I'm going to put it out there. It looks like you just combined Tristana and Oriana

Not seeing the trist; his e reminds me a bit of grag ult, the w of some weird combination of cc abilities, the ult similar to ori.