Nike aspects brainstorm ideas
I present to you two aspects for Nike that'd be relatively easy I think to make, based on my experience (I was once top 3 Nike global in ranked some years ago and with talk of Nike I wanted to get my Nike in a Nikes for the Nike)
The first is something supportive, you remove her ultimate damage, but for those allies with her halos above them, they get a global buff. If she ults into her allies and the ring touches them with halos, they get invigorated with a further buff. The buff increases based on how many halos they have.
The second is the barrier is replaced with a staff blast (think Stargate). I always wanted a secondary offensive option to go with the 1, and this might be shameless but it would work a bit like a Freya pulse for some seconds, or as a toggle like Xbal. This is the "selfish" option, the kicker being you don't give halos to your allies, you instead keep them for yourself. The halos increase the damage of the 2 by allowing it to have bigger power scaling, levelling it up would just increase the flat damage. That should make sure she doesn't get out of hand but is still potent in potentially jungle or ADC role, which she has done in the past. She'd sort of float in place and fire these bright projectiles with left click. You'd know she's doing that because she'd be doing her floating, just without the barrier.
Nike also has an unused quick animation in the lobby where she flips to her empowered form with a helmet, I'd imagine she'd use this little mini jump to show her activating and deactivating the steroid. It's a lot different to her mega jump for her ult, so if it's a 1-1 port of her in lobby then they could use that.
Also as a nitpick I'd just call the ultimate Sentinel, vs Sentinel of Zeus.
I'd imagine the aspects would be called like "Aspect of Ascendancy" for the first and "Aspect of Glory" for the other. Being in lore the biggest thing about her was if a god was next to her, her spirit would raise them so that they'd always win and be on top. The other is more playing on her "competitive" battlefield aspects of looking for glory and favoring champions. You could go with "Aspect of the Champion" but I think glory sounds shorter and better