They are deck defining cards rather than support cards
Beyond being a menace in the story, this Ashiok is also a rather powerful, and certainly unique card
With Normans cost reduction applied, these effects become backbreaking and often turn a modest graveyard into the kind of resource that guarantees victory
There are also cards in Midnight Hunt which simply tell you it becomes day or it becomes night as part of their effects
I do not consider this as a high power finisher, but more as a solid discard outlet for reanimator/welder strategy, or even a midrange wr deck with nahiri and a bunch of eldrazis as finisher (an archetype that I found out very efficient in the cube, as white is very underdrafted, has the best permanent based hate against unfair decks and red is also often very open as few people are into rdw stratgies)
If you have an unopened first-print SV9 box, this is the card that makes it a potential jackpot