I attempted that, armor incapable of being affected by magic that instead boosts the wearer. A being so well versed in the multiverse he can travel between them at will. These are big dramatic things that can help the dying civilization. Darris’s style was that he uses weapons, artifacts, and power he had gained from across the worlds he travelled. If it was not for his ability to travel worlds freely. Doric’s style was to deny would be opponents from overpowering him using magic. Both characters fit, and is only overpowering if others m, be it players or NPCs, let it. For Darris, however, traveling worlds (aka other RPs) is his story. If we want legend then I can make Eden the Law Master who has kept crime to a nonexistent state. And in turn completely remove any limits he has. 

Again the advantage thing is only self limited to a degree. It’s not that he needs permission to provide buffs or debuffs. If it would not affect his eligibility, I’d remove that condition all together. But based on both Darris and Doric I want it there for now.

You also underestimate the buffs he can apply before conditions start to set. Within the realm of possibility where both sides can still achieve victory. The equivalent of an extra life, invisibility, total visibility of anything hidden, sever ties, open locks, protection from charms, create shields, and create artificial walls along with boosting the attributes of his allies. He works best working with someone else.

When I design characters, I do it from a story perspective, not a powered one. The powers come second. I look to how the powers would work in an interaction, not as a means to be all powerful even if the power seems to end up that way.