Kaya, Bane of the Dead
Here is arguably one of the most dreaded uncommon planeswalkers in the set, and not because of her passive. That minus three ability is the reason why Kaya will quickly become the most valued planeswalker on the battlefield.
It will be hard to use that minus ability more than two times, but with a well-coordinated proliferate deck it would definitely be possible.
But even then, exiling two of the best creatures an opponent controls for six mana is already super strong.
Published Apr. 23rd 2019