Conversely, all of these cards fit well into the Stasis shell itself, further making the opponents threats less relevant, if the threats can even be cast
The big draw is going to be that first slot
Typically, a player defeats their opponent(s) by reducing their life totals to zero, which is commonly done via combat damage by attacking with creatures
We just have so many ways to abuse Teysa
That's a little true, but if +1/+1 counters are part of your strategy, this card will take your team from "I think we should be watching that" to "well, who wants to play another one?" really fast
A massive creature, a powerful planeswalker, or a devastating spell are the kinds of threats you should build your deck around