Stun counters exist independently of the effects that created them
Seeing as her modal triggered ability pings whenever any Bear enters the battlefield under your control (thats inclusive of tokens), youll be able to grow your very Bear-y board and also thin out the opposing herds via Ayulas fight trigger
It's also really well costed: you can play it for six colorless mana, three Sultai mana, or anywhere in between
The +1 doesnt seem great for a 5CMC walker, though the ability to create a creature with reach is appealing
Dual-Ink cards may feel clunky or underwhelming at first, but as more cards come out and more players can use them, much of this will likely fall to the side
Its also possible that it could see play in a Grixis Control shell in Standard, but it probably isnt better than Desperate Ravings