This... really seems sad compared to the Simic one...
She has no keywords, no other abilities, requires her to go into the red zone, and costs 2 more...
Simic one ramps you when you need it (early game) and doesnt need to go into the red zone...
She doesn't need to go into the red zone, and in fact gets no benefit out of it. She triggers off "non-human" creatures attacking, and she's very human.
She reminds me of Depala, Pilot Exemplar. While Depala is much safer and provides card advantage, Winota saying "a non-Human" instead of "one or more non-Humans" can easily snowball into insanity. Attacking with, say, the two tokens from Pia and Kiran Nalaar can dig twelve cards deep... And maybe one of them is an Evangel of Heliod or a Lena, Selfless Champion. Needless to say, things get NASTY.
Yeah, I think the key to this card in commander will be finding humans that generate non-human tokens, of which there are a lot. It's an interesting sideways human tribal, and looks like it could be fun and powerful. The fact that the humans that ETB are indestructible and attacking is a nice way to add to the aggression, without screwing you over because your Pia and Kiran Nalaar ran into a 3/3.